The 4 in. Steel Round Gas Vent Top is a Type B, galvanized-steel fitting that helps prevent rain and debris from entering the vent. It is not for use with wood-burning applications. The end is die-formed for uniform sizing and a strong, easy-to-connect joint. The cap is tested and UL listed for safety in accordance with NFPA standards.

• Strong, durable galvanized steel
• Prevents rain and debris from entering the vent
• Not to be used with wood-burning applications
• Tested and listed per UL 441 for installation in single and multi-story buildings

The 5 in. x 36 in. Steel Round Gas Vent Pipe is made of durable galvanized steel. Each end is die-formed for uniform sizing and strong, easy-to-connect joints. A locktab feature allows the option of installation without using sheet-metal screws. This Type B round fitting is designed for use on approved gas appliances in residential, light commercial and industrial applications. It is tested and UL listed for safety in accordance with NFPA standards.

• Strong, durable galvanized steel
• Gas vent pipe for use on approved gas appliances
• Locktab feature can be used instead of sheet-metal screws for ease of installation
• Each end is die-formed to assure uniform sizing for strong, easy-to-connect joints
• Tested and listed per UL 441 for installation in single- and multi-story buildings
• Type B gas vent is also referred to as b vent or type b vent
• Some common applications may include warm air furnaces, tank water heaters, residential boilers, common vented appliances and more
• Used on gas-fired category I natural draft appliances

Double Wall Construction

• Non-Positional Locking System Makes Installation A Snap
• No Tools Required For Disassembly

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Designed to meet the rugged demand of the jobsite, with its inner wall recessed to eliminate damage in handling
• 1 in. clearance to combustibles in single and multi-family dwellings
• Innovative system for a lock tight connection called DuraLock

The Model 3EFC5 Expandable Flex Connector is designed for use with gas-fired appliances equipped with draft hoods and other appliances listed for use with Type B Gas Vent. Single Wall Expandable-Flexible Gas Vent Connector (EFC) offers a simple connection between appliance and Selkirk Type B vent. UL listed and only requires 1 in. minimum airspace clearance to combustibles and has multiple applications, can be for single vent or combined vent.

• Model EFC expandable flexible gas vent connector system greatly simplifies most gas appliance vent installations
• No elbows are required for installation
• Integrated draft hood connector
• Expands 1 ft. to 3 ft.
• Limited lifetime warranty
• Check appliance installation instructions for details
• Industry best warranty contact Selkirk for details
• requires 1 in. minimum airspace clearance to combustibles
• can be for single vent or combined vent
• Provides 360° flexibility

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Adds 10.5 in. L to a 5 in. Dia installation
• Aluminum inner wall and galvalume outer wall construction that features an industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Adds 22.5 in. L to a 6 in. Dia installation
• Aluminum inner wall and galvalume outer wall construction that features an industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Use to support offsets and pipe used in vertical rise or horizontal runs as per installation instructions. PolyPro and PVC/CPVC: PVC pipes are commonly used for venting water heaters, condensing boilers and warm air furnaces, yet PVC was never designed for such use. PolyPro is an engineered alternative for condensing gas appliances. Engineered for venting, it is easier and faster to install than PVC, saving the contractor time and money.

• PolyPro is a Polypropylene vent pipe for use with ANSI category II and IV gas-burning appliances, including high efficiency water heaters, condensing boilers and warm air furnaces
• 0 in. clearance to combustibles for exhaust temperatures up to 194 degree F / 90 degree C and 0 in. clearance for vertical installations up to exhaust temperatures of 230 degree F / 110 degree C and 1/4 in. / 6 mm clearance to combustibles for horizontal installations at exhaust temperatures up to 230 degree F / 110 degree C
• Check with appliance manufacturer, Intertek / ETL Listed to ULC-S636 Listed as a class IIA, IIB, and IIC vent system
• PolyPro is an environmentally safe and engineered alternative, for condensing gas appliances
• Engineered for venting, it is 100% recyclable, and contains no toxic or carcinogenic materials, chlorides, or heavy metals
• PolyPro does not release hazardous gases during combustion, and has been used safely throughout Europe for over 20 years
• PolyPro is engineered with a corrosion-free, condensation management system
• Rigid pipe constructed of 2.2 mm (minimum) thick PolyPro
• Easy to install lightweight, assembles quickly, can be disassembled for inspection or cut to desired length
• Gasketed joint system, no adhesives nor primers required, no curing times and no special training, no mess

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Gives 4 in. b-vent run flexibility to bend around an obstruction like a stud and maintain 1 in. clearance
• Has 48 in. L to allow multiple bends
• Eliminates the need for b-vent to more easily connect an appliance to the b-vent wye or tee in the mechanical room

Use for horizontal through-the-wall terminations. Check installation instructions for restrictions on horizontal terminations, such as minimum distance from windows and doors. FasNSeal is for use with natural gas or propane Categories II, III and IV appliances or Canada's Type BH Gas Vent Systems, having a maximum rated operating temperature of 480°F and a maximum positive pressure of 15" (FasNSeal Flex 6") water column.

• FASNSEAL can be used on a wide range of applications, including: high efficiency gas boilers, furnaces, booster heaters, pool heaters, water heaters, unit heaters, or tankless water heaters
• Patented built-in mechanical locking band and triple-lipped directional gaskets
• Engineered with smooth clean welds located 90 degree from mechanical locking bands
• All FASNSEAL components which come in contact with exhaust gases and condensates are now silicone free, important design and manufacturing feature greatly reduces the chances of system breakdown and failure
• Welded seams ensure a leak-free product that is meant to last

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and Liquified Propane (LP) category I appliances with a draft hood
• Replacement tee cap for 5 in. Dia DuraVent B-vent
• Prevents flue gases from leaking out the 5 in. Dia B-vent tee
• Allows easy access to vent run for cleaning and inspection thru the b-vent tee

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Allows a 4 in. Dia b-vent run to be increased to 5 in. for added draft
• Aluminum inner wall and galvalume outer wall construction that features an industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Designed to meet the rugged demand of the jobsite, with its inner wall recessed to eliminate damage in handling
• 1 in. clearance to combustibles in single and multi-family dwellings
• Innovative system for a lock tight connection called DuraLock

Offsets around obstructions as needed. Includes 1 Locking Clamp. PolyPro is an engineered alternative for condensing gas appliances. Engineered for venting, it is easier and faster to install than PVC, saving the contractor time and money. Polypropylene has a higher operating temperature limit of 230 degree F/110 degree C (PVC is 149 degree F/65 degree C maximum and CPVC is 194 degree F/90 degree C). PolyPro is engineered with a condensation management system.

• PolyPro is a polypropylene vent pipe for use with ANSI Category II and IV gas-burning appliances, including high efficiency water heaters, condensing boilers and warm air furnaces
• 0 in. clearance to combustibles for exhaust temperatures up to 194 degree F/90 degree C and 0 in. clearance for vertical installations up to exhaust temperatures of 230 degree F/110 degree C and 1/4 in./6 mm clearance to combustibles for horizontal installations at exhaust temperatures up to 230 degree F/110 degree C
• Listed with the appliance in the USA, check with appliance manufacturer, Intertek/ETL listed to ULC-S636 Listed as a class IIA, IIB and IIC vent system
• PolyPro is an environmentally safe and engineered alternative, for condensing gas appliances
• Engineered for venting, it is 100% recyclable and contains no toxic or carcinogenic materials, chlorides or heavy metals
• PolyPro does not release hazardous gases during combustion and has been used safely throughout Europe for over 20-years
• PolyPro is engineered with a corrosion-free, condensation management system
• Rigid pipe constructed of 2.2 mm (minimum) thick PolyPro
• Easy to install: lightweight, assembles quickly, can be disassembled for inspection or cut to desired length
• Gasketed joint system, no adhesives nor primers required, no curing times and no special training. no mess

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Adds 3 in. to 10 in. of adjustability to a 4 in. Dia b-vent run
• Aluminum inner wall and galvalume outer wall construction that features a industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Double Wall Construction

• Non-Positional Locking System Makes Installation A Snap
• No Tools Required For Disassembly

Type B Gas Vent pipe used to add length to a straight length of Type B Gas Vent. The 12 in. L pipe adds 3 in. to 10 in. L. This pipe requires a 2 in. overlap.

• Type B gas vent designed to the demands of the common category I appliance installation
• Use with natural gas and liquefied propane (LP) category I appliances with a draft hood
• Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation; an innovative system for a lock tight connection called DuraLock
• 1 in. clearance to combustibles in single and multi-family dwellings
• Available in 3 in. to 8 in. Dia
• Limited lifetime warranty
• Listed to UL 441, UL 1777, and ULC S808

Double Wall Construction

• Non-Positional Locking System Makes Installation A Snap
• No Tools Required For Disassembly

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Connects 4 in. Dia b-vent to the draft hood of the appliance
• Aluminum inner wall and galvalume outer wall construction that features an industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Designed to meet the rugged demand of the jobsite, with its inner wall recessed to eliminate damage in handling
• 1 in. clearance to combustibles in single and multi-family dwellings
• Innovative system for a lock tight connection called duralock

Double Wall Construction

• Non-Positional Locking System Makes Installation A Snap
• No Tools Required For Disassembly

Type B Gas Vent is used for venting listed natural gas or liquid propane Category I, draft hood appliances, or appliances that have been specifically tested and listed to use Type B Gas Vent. The appliances listed typically use Type B Gas Vent systems, but not always: Furnaces, Water Heaters, Boilers, Room Heaters, Decorative Gas Appliances, and Unit Heaters. A 1 in. clearance to combustible material must be maintained. To calculate OD add 5/8 in.

• Type B gas vent designed to the demands of the common category I appliance installation
• Use with natural gas and liquified propane (lp) category I appliances with a draft hood
• Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation
• An innovative system for a lock tight connection called DuraLock
• 1 in. clearance to combustibles in single and multi-family dwellings
• Available in 3 in. thru 8 in. Dia
• To calculate installed length, subtract 1-1/2 in. from each connection of vent
• To calculate OD add 5/8 in.
• Limited lifetime warranty
• Listed to UL 441 and ULC S693

Type B Gas Vent designed to the demands of the common category I appliance installation. Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation. An innovative system for a lock tight connection called DuraLock.

• Use with natural gas and liquified propane (LP) category I appliances with a draft hood
• Enables the angle of the 4 in. Dia vent run to be adjusted up to 90 degree from vertical, all vent runs must return to vertical before termination
• Aluminum inner wall and galvalume outer wall construction that features a industry leading twist-lock design
• 1 in. clearance to combustibles in a single or multi-family dwelling applications

Made of strong, durable galvanized steel, the 4 in. x 36 in. Round Type B Gas Vent Pipe is built to last. The exclusive locktab feature adds versatility to installation on approved gas appliances in residential, light commercial and industrial applications. Rugged construction, assured safety and fully tested and listed per UL441.

• Constructed of strong, durable galvanized steel, this vent pipe is built to last
• Die-formed ends to assure uniform sizing
• For use on approved gas appliances in residential, light commercial and industrial applications
• Exclusive locktab feature adds versatility to installation
• Fits most 4 in. pipes
• In accordance with National Fire Protection Association Nfpa54 and Nfpa211 standards