Magnetic Block

Statistics show that 90 percent of fire related fatalities are caused by smoke poisoning from fires within buildings. The importance of smoke vents and SHEV systems, therefore, can not be underestimated.

The SHEV system and smoke vents also allow for fire fighters and first responders to enter the area, meaning that passages are sufficiently clear for them to attend to occupants in need as well as reach the source of the fire in order to extinguish it.

Both natural and mechanical ventilation systems can be used as part of SHEV systems, with each one suited to a different type of building. Natural smoke ventilation relies on the buoyancy of hot gases, and uses automatically-opened vents to draw rising smoke, heat and dangerous gases off out into the open naturally.

1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
22.99
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Kats Usa Made Magnetic Engine Block Heater For Tractors Or Other Equipment 200w
Kats Usa Made Magnetic Engine Block Heater For Tractors Or Other Equipment 200w
55.98
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
29.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
69.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
39.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
55.99
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Kats 1155 Magnetic 200w Heater Engine Block Snowblower Snowmobile Oil Pan Thaw
Kats 1155 Magnetic 200w Heater Engine Block Snowblower Snowmobile Oil Pan Thaw
54.89
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Max Magnets Super Strong N52 Neodymium Large Block Magnet 2x1x38 Rare Earth
Max Magnets Super Strong N52 Neodymium Large Block Magnet 2x1x38 Rare Earth
11.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
19.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
49.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
45.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
20.99
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1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
8.99
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Max Magnets Super Strong N52 Neodymium Large Block Magnet 2x1x38 Rare Earth
Max Magnets Super Strong N52 Neodymium Large Block Magnet 2x1x38 Rare Earth
11.99
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All Size 100 500 Tiny Small Neodymium Disc Rare Earth Magnets Craft Warhammer
All Size 100 500 Tiny Small Neodymium Disc Rare Earth Magnets Craft Warhammer
7.99
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1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
12.99
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1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
16.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
6.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
6.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
29.99
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Max Magnets Super Strong Large 1.5 Neodymium Large Block 40x40x20 Rare Earth
Max Magnets Super Strong Large 1.5 Neodymium Large Block 40x40x20 Rare Earth
16.99
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1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
1.87
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All Size 100 500 Tiny Small Neodymium Disc Rare Earth Magnets Craft Warhammer
All Size 100 500 Tiny Small Neodymium Disc Rare Earth Magnets Craft Warhammer
15.98
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5 Pack 1.5 Inch Large Neodymium Adhesive Block Magnets Strong Rare Earth Craft
5 Pack 1.5 Inch Large Neodymium Adhesive Block Magnets Strong Rare Earth Craft
11.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
26.99
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1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
6.01
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Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
12.99
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Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
9.99
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50 100 Pcs Round Disc Block Magnets Rare Earth Neodymium N52 N48 N42 All Size
50 100 Pcs Round Disc Block Magnets Rare Earth Neodymium N52 N48 N42 All Size
6.99
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Machinist Magnetic Transfer V Block
Machinist Magnetic Transfer V Block
40.00
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Brown And Sharpe 255 Magnetic Block W Original Box
Brown And Sharpe 255 Magnetic Block W Original Box
100.00
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
12.99
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Brown Sharpe 5-14 Magnetic Block
Brown Sharpe 5-14 Magnetic Block
85.00
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
65.99
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Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
19.99
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Toolmaker Produced Magnetic Transfer Parallel Blocks
Toolmaker Produced Magnetic Transfer Parallel Blocks
150.00
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1050100pcs Super Strong Block Round Disc Magnets Rare-earth Neodymium Magnet
1050100pcs Super Strong Block Round Disc Magnets Rare-earth Neodymium Magnet
2.99
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1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
14.09
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N52 Large 3 Neodymium Block Magnet Super Strong Rare Earth Pull Force 65 Lbs
N52 Large 3 Neodymium Block Magnet Super Strong Rare Earth Pull Force 65 Lbs
14.99
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Magnetics Machinists Angle Block Set
Magnetics Machinists Angle Block Set
500.00
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Magnetic Heater Engine Block Oil Pan Warmer Fuel Tank Diesel 300w Kats 1160
Magnetic Heater Engine Block Oil Pan Warmer Fuel Tank Diesel 300w Kats 1160
85.00
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Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
19.99
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Lot Of 100 50 10 X 5 X 3mm Block Rare Earth Neodymium Super Strong Magnets N50
Lot Of 100 50 10 X 5 X 3mm Block Rare Earth Neodymium Super Strong Magnets N50
8.99
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N35 Countersunk Block Strong Magnets Rare Earth Neodymium Hole Various Sizes
N35 Countersunk Block Strong Magnets Rare Earth Neodymium Hole Various Sizes
25.80
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N35 Countersunk Block Strong Magnets Rare Earth Neodymium Hole Various Sizes
N35 Countersunk Block Strong Magnets Rare Earth Neodymium Hole Various Sizes
6.45
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10-100pcs Super Strong Block Round Disc Magnets Rare-earth Neodymium Magnet N35
10-100pcs Super Strong Block Round Disc Magnets Rare-earth Neodymium Magnet N35
2.99
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2 Aluminum Magnetic Transfer V-blocks
2 Aluminum Magnetic Transfer V-blocks
46.99
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Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
13.99
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Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
69.99
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2 Strong Grade N42 2x12x12 Inch Rare Earth Neodymium Block Magnet
2 Strong Grade N42 2x12x12 Inch Rare Earth Neodymium Block Magnet
9.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
32.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
15.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
33.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
15.99
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New Master Magnetic 7044 2pk Ceramic Block Magnets 9934423
New Master Magnetic 7044 2pk Ceramic Block Magnets 9934423
1.79
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Magnetic Ground Grounding Block Magnet Clamp For Arc Welder Welding Ground Wire
Magnetic Ground Grounding Block Magnet Clamp For Arc Welder Welding Ground Wire
18.95
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Mitutoyo Magnetic Transfer V-block 181-142 For Magnetic Chuck
Mitutoyo Magnetic Transfer V-block 181-142 For Magnetic Chuck
99.00
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Bald Eagle Corporation Magnetic Block 6 X 2 X 2 In Wooden Case
Bald Eagle Corporation Magnetic Block 6 X 2 X 2 In Wooden Case
199.99
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Brown Sharpe Rectangular Magnetic Block Chuck
Brown Sharpe Rectangular Magnetic Block Chuck
189.00
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1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
1050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 25x8x2mm N52
8.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
46.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
38.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
59.99
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
9.99
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5 Pack 1.5 Inch Large Neodymium Adhesive Block Magnets Strong Rare Earth Craft
5 Pack 1.5 Inch Large Neodymium Adhesive Block Magnets Strong Rare Earth Craft
11.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
39.99
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1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
1-50x 20x10x2mm N52 Neodymium Block Magnet Super Strong Rare Earth Magnets Lot
5.07
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50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
50 100 Pcs Magnets Block Cube Rare Earth Neodymium Magnetic N50 N48 N52 All Size
14.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
22.99
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
8.99
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N35 Countersunk Block Strong Magnets Rare Earth Neodymium Hole Various Sizes
N35 Countersunk Block Strong Magnets Rare Earth Neodymium Hole Various Sizes
25.80
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Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
Lot 50 100 Pcs Round Disc Block Magnets Cylinder Rare Earth Neodymium N52 N48
14.99
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Max Magnets Super Strong Large 1.5 Neodymium Large Block 40x40x20 Rare Earth
Max Magnets Super Strong Large 1.5 Neodymium Large Block 40x40x20 Rare Earth
16.99
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Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
Lot 1 2 5 10 N52 Square Block Super Neodymium Rare Earth Magnetic Cube 1 Inch.
12.99
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Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
Lot 5 10 50 Super Block Magnets 1x12x14 Inch Rare Earth Neodymium N52
9.99
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Lot Of 100 50 10 X 5 X 3mm Block Rare Earth Neodymium Super Strong Magnets N50
Lot Of 100 50 10 X 5 X 3mm Block Rare Earth Neodymium Super Strong Magnets N50
8.99
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5-50pcs Super Block Magnet Strong Square Neodymium Rare Earth Magnets Muti-size
5-50pcs Super Block Magnet Strong Square Neodymium Rare Earth Magnets Muti-size
4.55
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Starrett - 566 Rectangular Magnetic V-block Steel
Starrett - 566 Rectangular Magnetic V-block Steel
300.00
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5-50pcs N35 Neodymium Block Round Magnet Super Strong Rare Earth Magnets Lot
5-50pcs N35 Neodymium Block Round Magnet Super Strong Rare Earth Magnets Lot
1.99
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
108.43
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Magnetic Transfer Parallel Blocks For Surface Grinder Set Of 2 1.9 X 3.9 X 1.1
Magnetic Transfer Parallel Blocks For Surface Grinder Set Of 2 1.9 X 3.9 X 1.1
27.65
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Pfeiffer Eclipse 934 Magnetic Block Lufkin W Micropositioner
Pfeiffer Eclipse 934 Magnetic Block Lufkin W Micropositioner
112.00
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Machinists Magnetic Transfer V-block  2-78 X 1-34 X 2-38l
Machinists Magnetic Transfer V-block 2-78 X 1-34 X 2-38l
19.99
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Round Bur Block Magnetic Fg Ra Fgos Dental Burs Block 7 Hole Cover - Autoclavabl
Round Bur Block Magnetic Fg Ra Fgos Dental Burs Block 7 Hole Cover - Autoclavabl
5.49
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10pcs Neodymium Block Magnet Rare Earth Magnets 20x10x2mm 8x3x2mm
10pcs Neodymium Block Magnet Rare Earth Magnets 20x10x2mm 8x3x2mm
1.06
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
229.22
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Lot 10 50 Strong Countersunk Magnets 20x12x4mm Hole 4mm Rare Earth Neodymium
Lot 10 50 Strong Countersunk Magnets 20x12x4mm Hole 4mm Rare Earth Neodymium
8.99
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10 100 Round Disc Block Square Cube Magnets Rare Earth Neodymium N52 N50 N48
10 100 Round Disc Block Square Cube Magnets Rare Earth Neodymium N52 N50 N48
6.99
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Brown And Sharpe Magnetic V Block 750d Inv.40909
Brown And Sharpe Magnetic V Block 750d Inv.40909
200.00
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
63.40
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Magnetic Rectangular Dental Lab Bur Block Holder Station Holds 14 Burs
Magnetic Rectangular Dental Lab Bur Block Holder Station Holds 14 Burs
5.99
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
183.67
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Magnetic Sine Block Chuck Surface Grinder Milling 10 34x6 Machinist Used
Magnetic Sine Block Chuck Surface Grinder Milling 10 34x6 Machinist Used
475.00
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Fishers Machine No.5 Long Mag Magnetic Chuck V Block
Fishers Machine No.5 Long Mag Magnetic Chuck V Block
89.00
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102050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 20x10x2mm
102050100pcs Super Strong Block Fridge Magnets Rare Earth Neodymium 20x10x2mm
8.99
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Brown Sharpe No. 760 5-14 Magnetic Block In Original Wood Box
Brown Sharpe No. 760 5-14 Magnetic Block In Original Wood Box
150.00
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
130.64
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
788.60
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Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
Precision Magnetic V Block Matched Pair Both Side V Packed In Wooden Box
452.09
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Shars 6 X 6 Combination Sine Plate Magnetic Chuck New R
Shars 6 X 6 Combination Sine Plate Magnetic Chuck New R
669.95
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The timing of the opening of smoke vents is of critical importance, as it is this which allows occupants to escape quickly. It is therefore recommended by many professionals that an automatic vent system as described above is put into place for maximum efficiency and safety.

There are several different possible locations for automatic opening smoke vents, including: the automatic opening window, which releases smoke into the atmosphere; the smoke shaft and AOV, where smoke flows via a window or door to the vent and then out into the atmosphere; and the stairwell AOV, where smoke flows though an AOV at the top of a stairwell.

Product engineering is an advanced field as compared to simple product development. It is usually defined as the process of developing a product that can be mass-produced and sold in the market. Not only does this sector take care of processes associated with performance and cost, but it also takes the reliability and validity of the product into consideration.