Smith Corona Ribbon

An important component of many buildings is that of efficient smoke ventilation systems. The purpose of Smoke and Heat Exhaust Ventilation (SHEV) systems is to draw poisonous fumes and heat out of a burning building.

It is important that this system is designed to keep common spaces such as corridors, lobbies and stairwells devoid of smoke so the occupants can evacuate the building quickly and efficiently and that fire fighters have access to the source of the fire in order to extinguish it.

Smoke ventilation systems can be both natural and mechanical. Natural smoke ventilation systems are commonly the excellent choice if they can be built into the apartment initially. These systems allow the creation of a rising thermal current which naturally draws rising smoke, heat and poisonous gases from the building in the event of a fire.

Smith Corona Sterling Silent Typewriter Ribbon With Custom Color Options
Smith Corona Sterling Silent Typewriter Ribbon With Custom Color Options
0.00
View Details
Smith Corona Classic 12 Typewriter Ribbon With Custom Color Options
Smith Corona Classic 12 Typewriter Ribbon With Custom Color Options
0.00
View Details
Smith Corona Typewriter Ribbon Spool Black Ink Sc 20 Scm Made In Usa
Smith Corona Typewriter Ribbon Spool Black Ink Sc 20 Scm Made In Usa
6.75
View Details
Smith Corona Classic 12 Typewriter Ribbon Red And Black Ink
Smith Corona Classic 12 Typewriter Ribbon Red And Black Ink
7.00
View Details
Smith Corona Skywriter Typewriter Spool Ribbon To Rewind Black Red Correction
Smith Corona Skywriter Typewriter Spool Ribbon To Rewind Black Red Correction
0.00
View Details
Smith Corona Sterling Spool Typewriter Ribbon Black Red Fabric Ink Ribbon
Smith Corona Sterling Spool Typewriter Ribbon Black Red Fabric Ink Ribbon
7.00
View Details
Smith Corona Coronet Electric 12 Typewriter Ribbon Black Twin Spool
Smith Corona Coronet Electric 12 Typewriter Ribbon Black Twin Spool
7.00
View Details
Smith Corona Typewriter Ribbon Compatible Display 800 H Series 21000 And 21060
Smith Corona Typewriter Ribbon Compatible Display 800 H Series 21000 And 21060
11.50
View Details
Smith Corona Sterling Spool Typewriter Ribbon Black
Smith Corona Sterling Spool Typewriter Ribbon Black
6.00
View Details
Smith Corona Silent Super Typewriter Ribbon Black Ink
Smith Corona Silent Super Typewriter Ribbon Black Ink
7.49
View Details
Smith Corona Sterling Typewriter Ribbon Solid Black Ink Ribbon
Smith Corona Sterling Typewriter Ribbon Solid Black Ink Ribbon
7.50
View Details
Smith Corona Classic 12 Typewriter Ribbon New Black Ink Ribbon Free Shipping
Smith Corona Classic 12 Typewriter Ribbon New Black Ink Ribbon Free Shipping
7.00
View Details
2pk New Genuine Smith Corona H Series 21000 Correctable Typewriter Ribbon
2pk New Genuine Smith Corona H Series 21000 Correctable Typewriter Ribbon
13.75
View Details
New Smith Corona Typewriter Ribbon Cartridge 17657 C17657 Type Iia Coronamatic
New Smith Corona Typewriter Ribbon Cartridge 17657 C17657 Type Iia Coronamatic
16.00
View Details
Smith Corona Galaxie 12 Typewriter Ribbon Blkred Ink
Smith Corona Galaxie 12 Typewriter Ribbon Blkred Ink
7.50
View Details
Smith Corona Floating Shift Typewriter Ribbon Blkred Twin Spool Made In America
Smith Corona Floating Shift Typewriter Ribbon Blkred Twin Spool Made In America
7.25
View Details
New Listinggenuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
New Listinggenuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
14.99
View Details
New Listingporelon 11467 Correctable Ribbon Smith Corona H Series Typewriter Black Qty 1
New Listingporelon 11467 Correctable Ribbon Smith Corona H Series Typewriter Black Qty 1
9.50
View Details
Smith Corona Galaxie 12 Twelve Galaxie Xii Typewriter Ribbon Blkred Twin Spool
Smith Corona Galaxie 12 Twelve Galaxie Xii Typewriter Ribbon Blkred Twin Spool
7.25
View Details
New Listingsmith Corona H 21000 H 63446 Black Correctable Film Ribbon 2 Pk Amp H 21050 4pk
New Listingsmith Corona H 21000 H 63446 Black Correctable Film Ribbon 2 Pk Amp H 21050 4pk
20.00
View Details
Smith Corona Corsair Deluxe Typewriter Ribbon On Small 1 58 Spools
Smith Corona Corsair Deluxe Typewriter Ribbon On Small 1 58 Spools
19.95
View Details
2 Pack Smith Corona Typewriter Ribbon Black And Red Ink Twin Spool 2 Free Ship
2 Pack Smith Corona Typewriter Ribbon Black And Red Ink Twin Spool 2 Free Ship
9.50
View Details
2 Pack New Genuine Smith Corona H Series 21000 Correctable Typewriter Ribbons
2 Pack New Genuine Smith Corona H Series 21000 Correctable Typewriter Ribbons
14.45
View Details
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
13.75
View Details
Smith Corona Secretarial 215 Typewriter Ribbon Black Twin Spool Made In America
Smith Corona Secretarial 215 Typewriter Ribbon Black Twin Spool Made In America
7.25
View Details
Smith Corona Galaxie Deluxe Galaxie Ii Deluxe Typewriter Ribbon Black Twin Spool
Smith Corona Galaxie Deluxe Galaxie Ii Deluxe Typewriter Ribbon Black Twin Spool
7.25
View Details
Smith Corona Coronet Automatic 12 Typewriter Ribbon With Custom Color Options
Smith Corona Coronet Automatic 12 Typewriter Ribbon With Custom Color Options
0.00
View Details
Smith Corona Na1hh Na2hh Na3hh Typewriter Ribbon Ink Genuine Brand New
Smith Corona Na1hh Na2hh Na3hh Typewriter Ribbon Ink Genuine Brand New
7.99
View Details
Smith Corona Electra Xt Typewriter Ribbon Small Spool Black With Correction Tape
Smith Corona Electra Xt Typewriter Ribbon Small Spool Black With Correction Tape
22.95
View Details
Smith Corona Floating Shift Typewriter Ribbon Black Twin Spool Made In Usa
Smith Corona Floating Shift Typewriter Ribbon Black Twin Spool Made In Usa
6.49
View Details
2 Pk Vintage Portable Manual Royal Typewriter Spool Ribbon Black Red Amp 1 Black
2 Pk Vintage Portable Manual Royal Typewriter Spool Ribbon Black Red Amp 1 Black
12.95
View Details
Smith Corona Cougar Typewriter Ribbon Red Black Made In Usa
Smith Corona Cougar Typewriter Ribbon Red Black Made In Usa
22.50
View Details
Smith Corona Galaxie 12 Twelve Galaxie Xii Typewriter Ribbon Black Twin Spool
Smith Corona Galaxie 12 Twelve Galaxie Xii Typewriter Ribbon Black Twin Spool
7.25
View Details
Smith Corona Typewriter Ribbon 2 Ct Lot C17558 Black Cartridge Vintage New
Smith Corona Typewriter Ribbon 2 Ct Lot C17558 Black Cartridge Vintage New
26.00
View Details
Smith Corona Skyriter Typewriter Ribbon On Small Spools 21 Color Options
Smith Corona Skyriter Typewriter Ribbon On Small Spools 21 Color Options
0.00
View Details
Smith Corona Classic 12 Typewriter Ribbon Black Twin Spool Fresh Free Shipping
Smith Corona Classic 12 Typewriter Ribbon Black Twin Spool Fresh Free Shipping
7.25
View Details
Smith Corona Sterling Floating Shift Typewriter Ribbon With Custom Color Options
Smith Corona Sterling Floating Shift Typewriter Ribbon With Custom Color Options
0.00
View Details
New Listingsmith Corona Correctable Film Ribbon Cassettes 2 Pack H 59436 1033 Black Nos
New Listingsmith Corona Correctable Film Ribbon Cassettes 2 Pack H 59436 1033 Black Nos
8.50
View Details
Smith Corona Corsair Typewriter Ribbon Manual Rewind Fabric For Twin Spool
Smith Corona Corsair Typewriter Ribbon Manual Rewind Fabric For Twin Spool
0.00
View Details
Smith Corona Skyriter Typewriter Ribbon Original Small Spools Black Red Ribbon
Smith Corona Skyriter Typewriter Ribbon Original Small Spools Black Red Ribbon
22.50
View Details
Smith Corona Silent Super Typewriter Ribbon Blkred Twin Spool Made In America
Smith Corona Silent Super Typewriter Ribbon Blkred Twin Spool Made In America
7.25
View Details
Smith Corona Cougar Ii Typewriter Ribbon Original Small Spools Black Red Ribbon
Smith Corona Cougar Ii Typewriter Ribbon Original Small Spools Black Red Ribbon
22.50
View Details
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
5.99
View Details
Smith Corona 250 Office Electric 250 Typewriter Ribbon Black Twin Spool
Smith Corona 250 Office Electric 250 Typewriter Ribbon Black Twin Spool
7.25
View Details
Smith Corona Sterling Lc Smith Amp Corona Sterling Typewriter Ribbon Black
Smith Corona Sterling Lc Smith Amp Corona Sterling Typewriter Ribbon Black
7.25
View Details
Smith Corona Electra 210 Typewriter Spool Ribbon Black Blackred Correction
Smith Corona Electra 210 Typewriter Spool Ribbon Black Blackred Correction
0.00
View Details
Smith Corona H67173 Start Rite Ii Pack Printwheels Amp Ribbons New
Smith Corona H67173 Start Rite Ii Pack Printwheels Amp Ribbons New
14.99
View Details
Two Pk Smith Corona Galaxie 12 Typewriter Ribbon Scm Sc 20 Free Shipping Usa
Two Pk Smith Corona Galaxie 12 Typewriter Ribbon Scm Sc 20 Free Shipping Usa
11.95
View Details
Smith Corona Electric Typewriter Ribbon C 17558 New Old Stock
Smith Corona Electric Typewriter Ribbon C 17558 New Old Stock
10.50
View Details
Smith Corona Sterling Silent Super Sterling Typewriter Ribbon Black Twin Spool
Smith Corona Sterling Silent Super Sterling Typewriter Ribbon Black Twin Spool
7.25
View Details
Smith Corona Galaxiecoronet Electric 10 Typewriter Ribbon Blkred Twin Spool
Smith Corona Galaxiecoronet Electric 10 Typewriter Ribbon Blkred Twin Spool
7.25
View Details
New Listing2 Pack New Genuine Smith Corona H Series 21000 Correctable Typewriter Ribbons
New Listing2 Pack New Genuine Smith Corona H Series 21000 Correctable Typewriter Ribbons
14.00
View Details
New 2 Pack Smith Corona H 21000 Correctable Film Ribbon Black
New 2 Pack Smith Corona H 21000 Correctable Film Ribbon Black
7.99
View Details
Smith Corona Na3hh Typewriter Ribbon Black Ink Free Shipping
Smith Corona Na3hh Typewriter Ribbon Black Ink Free Shipping
7.99
View Details
Box Of 1 Porelon Correctable Smith Corona H Series Black Typewriter Ribbons 2006
Box Of 1 Porelon Correctable Smith Corona H Series Black Typewriter Ribbons 2006
9.97
View Details
Smith Corona Black Typewriter Ribbon C 17558 Black Cartridge Film Ribbon Re Rite
Smith Corona Black Typewriter Ribbon C 17558 Black Cartridge Film Ribbon Re Rite
16.99
View Details
Smith Corona Super Correct Super Correct Xt Typewriter Ribbon Black Twin Spool
Smith Corona Super Correct Super Correct Xt Typewriter Ribbon Black Twin Spool
7.25
View Details
Smith Corona Xd 5900 Xd5900 Xd 5900 Typewriter Ribbon Black Free Shipping
Smith Corona Xd 5900 Xd5900 Xd 5900 Typewriter Ribbon Black Free Shipping
7.99
View Details
Smith Corona 250 Office Electric 250 Typewriter Ribbon Blkred Twin Spool
Smith Corona 250 Office Electric 250 Typewriter Ribbon Blkred Twin Spool
7.25
View Details
Smith Corona 2 Pack Typewriter Black Correctable Film Ribbons H63446 H Series
Smith Corona 2 Pack Typewriter Black Correctable Film Ribbons H63446 H Series
6.99
View Details
Smith Corona Clipper Typewriter Ribbon Blkred Twin Spool Made In America
Smith Corona Clipper Typewriter Ribbon Blkred Twin Spool Made In America
7.25
View Details
Smith Corona Silent Typewriter Ribbon Blkred Twin Spool Corona Silent
Smith Corona Silent Typewriter Ribbon Blkred Twin Spool Corona Silent
7.25
View Details
Smith Corona Galaxie 12 Typewriter Spool Ribbon Black Blackred Correction
Smith Corona Galaxie 12 Typewriter Spool Ribbon Black Blackred Correction
0.00
View Details
Smith Corona Typewriter Ribbon Black And Red Ink Twin Spool 2 Free Shipping
Smith Corona Typewriter Ribbon Black And Red Ink Twin Spool 2 Free Shipping
6.50
View Details
Smith Corona Sterling Silent Super Sterling Typewriter Ribbon Blkred Twin Spool
Smith Corona Sterling Silent Super Sterling Typewriter Ribbon Blkred Twin Spool
7.25
View Details
Smith Corona Electra Xt Typewriter Ribbon On Small Spools 29 Color Options
Smith Corona Electra Xt Typewriter Ribbon On Small Spools 29 Color Options
0.00
View Details
Smith Corona Electra 210 Typewriter Ribbon Black Twin Spool Fresh Made In Usa
Smith Corona Electra 210 Typewriter Ribbon Black Twin Spool Fresh Made In Usa
7.25
View Details
Smith Corona 21000 Correctable Ribbon
Smith Corona 21000 Correctable Ribbon
18.65
View Details
Smith Corona H59048 Lift Off Correcting Tape 2 Pack Spool New Ribbon H21050 Lot
Smith Corona H59048 Lift Off Correcting Tape 2 Pack Spool New Ribbon H21050 Lot
13.64
View Details
Smith Corona H63446 H59436 Correctable Typewriter Film Ribbon Cassettes 2 Pack
Smith Corona H63446 H59436 Correctable Typewriter Film Ribbon Cassettes 2 Pack
9.99
View Details
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
11.95
View Details
Smith Corona H59048 Lift Off Correcting Tape 2 Pack Spool New Ribbon H21050
Smith Corona H59048 Lift Off Correcting Tape 2 Pack Spool New Ribbon H21050
7.25
View Details
Smith Corona Classic 10 Riviera Typewriter Ribbon Blkred Twin Spool New Fabric
Smith Corona Classic 10 Riviera Typewriter Ribbon Blkred Twin Spool New Fabric
7.25
View Details
Smith Corona Multi Strike Film Ribbon Cassette H 21025 H 63438 1
Smith Corona Multi Strike Film Ribbon Cassette H 21025 H 63438 1
6.00
View Details
Smith Corona H 21000 Typewriter H Series 2 Correctable Film Ribbons
Smith Corona H 21000 Typewriter H Series 2 Correctable Film Ribbons
4.99
View Details
Porelon Ribbon 11418 Black All Smith Corona H Series Free Shipping
Porelon Ribbon 11418 Black All Smith Corona H Series Free Shipping
9.00
View Details
Smith Corona Coronet Typewriter Ribbon 2 Pack 1 Black 1 Black And Red
Smith Corona Coronet Typewriter Ribbon 2 Pack 1 Black 1 Black And Red
12.00
View Details
2 Pack Genuine Smith Corona K22200 Correctible Film Typewriter Ribbon
2 Pack Genuine Smith Corona K22200 Correctible Film Typewriter Ribbon
14.99
View Details
Smith Corona Galaxie 12 Galaxie Xii Typewriter Ribbon Black Package Of Two
Smith Corona Galaxie 12 Galaxie Xii Typewriter Ribbon Black Package Of Two
11.75
View Details
Qty Of 2 Smith Corona Correcting Cartridge H Series 21060
Qty Of 2 Smith Corona Correcting Cartridge H Series 21060
13.99
View Details
Smith Corona H 21000 Typewriter 2 Pack Correctable Film Ribbons Sealed Package
Smith Corona H 21000 Typewriter 2 Pack Correctable Film Ribbons Sealed Package
8.40
View Details
Smith Corona Ribbon And Lift Off Tape New Old Stock H63446 Amp H59048
Smith Corona Ribbon And Lift Off Tape New Old Stock H63446 Amp H59048
16.00
View Details
Smith Corona H Series 21000 Correctable Typewriter Ribbons 2 In Package New
Smith Corona H Series 21000 Correctable Typewriter Ribbons 2 In Package New
9.95
View Details
Smith Corona H Series Typewriter Correction Ribbon Grc Brand 2 Each
Smith Corona H Series Typewriter Correction Ribbon Grc Brand 2 Each
5.97
View Details
New Genuine Smith Corona 2 Pack H Series 21000 Correctable Typewriter Ribbon
New Genuine Smith Corona 2 Pack H Series 21000 Correctable Typewriter Ribbon
7.99
View Details
Smith Corona H Series Typewriter Correction Ribbon Scm Brand 2 Each Lot
Smith Corona H Series Typewriter Correction Ribbon Scm Brand 2 Each Lot
6.97
View Details
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
Genuine Oem Smith Corona H Series 21000 Correctable Typewriter Ribbon 2 Pack
6.10
View Details
Smith Corona H59048 Lift Off Correcting Tape 2 Pack Spool New Ribbon H21050
Smith Corona H59048 Lift Off Correcting Tape 2 Pack Spool New Ribbon H21050
7.95
View Details
Three Pk Smith Corona Typewriter Ribbon Spool Black Sc 20 Scm Free Shipping
Three Pk Smith Corona Typewriter Ribbon Spool Black Sc 20 Scm Free Shipping
14.99
View Details
Smith Corona H63446 Correctable Typewriter Film Ribbon Cassettes H59436 Two Pack
Smith Corona H63446 Correctable Typewriter Film Ribbon Cassettes H59436 Two Pack
18.49
View Details
Smith Corona Typewriter Multistrike Ribbon Cassette Black H63438
Smith Corona Typewriter Multistrike Ribbon Cassette Black H63438
9.99
View Details
Smith Corona Typewriter 1 Pack Black Correctable Film Ribbons H63446
Smith Corona Typewriter 1 Pack Black Correctable Film Ribbons H63446
5.00
View Details
New Smith Corona 21025 Typewriter Ribbon Black H21025 Nip
New Smith Corona 21025 Typewriter Ribbon Black H21025 Nip
6.99
View Details
Smith Corona H Series Correctable High Yield Typewriter Black Ribbon Genuine
Smith Corona H Series Correctable High Yield Typewriter Black Ribbon Genuine
7.95
View Details
Smith Corona Typewriter Ribbon Smith Corona Xl 2800 Xl2800 Free Shipping
Smith Corona Typewriter Ribbon Smith Corona Xl 2800 Xl2800 Free Shipping
7.99
View Details
Smith Corona Golden Shield Silent Meteor Typewriter Ribbon Blkred Twin Spool
Smith Corona Golden Shield Silent Meteor Typewriter Ribbon Blkred Twin Spool
7.25
View Details
2 Pk Smith Corona Galaxie 12 Typewriter Ribbon Scm Sc 20 Free Shipping Usa
2 Pk Smith Corona Galaxie 12 Typewriter Ribbon Scm Sc 20 Free Shipping Usa
12.95
View Details
Smith Corona H Series Typewriter Correctable Ribbon 1 Pack Cassette New
Smith Corona H Series Typewriter Correctable Ribbon 1 Pack Cassette New
12.00
View Details
Smith Corona H63446 Correctable Typewriter Film Ribbon Cassettes H59436 Two Pack
Smith Corona H63446 Correctable Typewriter Film Ribbon Cassettes H59436 Two Pack
12.87
View Details
Smith Corona Classic 12 Typewriter Ribbon Black Ink
Smith Corona Classic 12 Typewriter Ribbon Black Ink
7.49
View Details
Smith Corona Corsair Deluxe Typewriter Ribbon On Small 1 58 Spools Blackred
Smith Corona Corsair Deluxe Typewriter Ribbon On Small 1 58 Spools Blackred
19.95
View Details
Smith Corona Galaxie 12 Typewriter Ribbon With Custom Color Options
Smith Corona Galaxie 12 Typewriter Ribbon With Custom Color Options
0.00
View Details
Smith Corona Cougar Typewriter Ribbon On Small Spools 21 Color Options
Smith Corona Cougar Typewriter Ribbon On Small Spools 21 Color Options
0.00
View Details
Smith Corona Super Sterling Typewriter Ribbon 2 Inch Version
Smith Corona Super Sterling Typewriter Ribbon 2 Inch Version
0.00
View Details
Smith Corona Profile Typewriter Ribbon Original Small Spools Red Black Ink
Smith Corona Profile Typewriter Ribbon Original Small Spools Red Black Ink
22.50
View Details
Smith Corona Profile Typewriter Ribbon Small Spool Black Ink And Correction Tape
Smith Corona Profile Typewriter Ribbon Small Spool Black Ink And Correction Tape
22.95
View Details
Smith Corona Electra 220 Typewriter Ribbon Black Twin Spool Fresh Made In Usa
Smith Corona Electra 220 Typewriter Ribbon Black Twin Spool Fresh Made In Usa
7.25
View Details
Smith Corona Electra 120 Typewriter Ribbon Black Twin Spool Made In America
Smith Corona Electra 120 Typewriter Ribbon Black Twin Spool Made In America
7.25
View Details
Smith Corona Electra 12 Electra 110 Typewriter Ribbon Black Made In America
Smith Corona Electra 12 Electra 110 Typewriter Ribbon Black Made In America
7.25
View Details
Smith Corona Galaxie Deluxe Galaxie Ii Deluxe Typewriter Ribbon Br Twin Spool
Smith Corona Galaxie Deluxe Galaxie Ii Deluxe Typewriter Ribbon Br Twin Spool
7.25
View Details
Smith Corona Coronet Electric 12 Typewriter Ribbon With Custom Color Options
Smith Corona Coronet Electric 12 Typewriter Ribbon With Custom Color Options
0.00
View Details
Smith Corona Sterling Lc Smith Amp Corona Sterling Typewriter Ribbon Blkred
Smith Corona Sterling Lc Smith Amp Corona Sterling Typewriter Ribbon Blkred
7.25
View Details
Smith Corona Sl460 Typewriter Ribbons Sl 460 Ink Ribbon 2 Pack Free Shipping
Smith Corona Sl460 Typewriter Ribbons Sl 460 Ink Ribbon 2 Pack Free Shipping
13.75
View Details
Smith Corona Electric 250 Typewriter Spool Ribbon Black Blackred Correction
Smith Corona Electric 250 Typewriter Spool Ribbon Black Blackred Correction
0.00
View Details
Smith Corona Sl 480 Sl480 Sl 480 Typewriter Ribbon Black Free Shipping
Smith Corona Sl 480 Sl480 Sl 480 Typewriter Ribbon Black Free Shipping
7.99
View Details
Smith Corona Electra 110 Typewriter Ribbon Value Pack 3 Pack Free Shipping
Smith Corona Electra 110 Typewriter Ribbon Value Pack 3 Pack Free Shipping
29.99
View Details

As the timely opening of smoke vents is necessary to maximise the efficiency and safety of the procedure, an automated system is recommended by experts. As soon as smoke is sensed, Automatic Opening Vents (AOV) are activated meaning that smoke and heat flows in the right direction and out of the building.

In many cases, where the architecture of a building is not sufficient for the up-venting of smoke and heat, mechanical ventilation systems can be installed to ensure the safety of both building occupants and those fighting the fire.

Myth 1: I must win the argument.