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Compare Garage Heaters
Modine Garage Heater
Empire Gas Heater
SB Gas Heater
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3" Pipe & Fittings
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5" Pipe & Fittings
Sterling Gas Heater Exhaust Pipe Kits
Sterling Vent System
5" Sterling Vent System Accessories
All pieces below are UL1738 approved for category III venting. The elbows allow vent the heater at a 45 or 90 degree angle. The drip tee or tee & cap are required to drain condensation if you do not have a 1/4" for foot downward slope in your vent line. The GG vent adapter connects the vent pipe to the heater. Extra vent pipe is needed if your installation requires more than the 5' of pipe which is included with the 5" vent system. The adjustable vent pipes can slide in and out of a fixed vent pipe giving you an adjustable length. The amount of adjustment available depends on the length of the pipe it is connected to. NOTE: 2 adjustable vent pipes can't be connected together. A firestop or thimble is needed when venting through a combustible wall. It insulates the pipe and provides the required distance from the pipe to the wall. Firestops can be used with thinner walls than a thimble which makes them ideal for most greenhouse installations. The storm collar is needed to seal the air gap between the pipe and a firestop on the outside wall.

What is UL 1738? In short, it is a US standard for gas venting systems required in category III applications. Category III refers to positive vent pressure which is created by exhaust blowers in unit heaters. These vent systems must be constructed of AL29-4CŪ stainless steel, contain silicone gaskets for sealing, and have a built in mechanical locking band among other requirements.

Dayton 45 Elbow
5" 45 Elbow
Dayton 90 Elbow
5" 90 Elbow
Dayton Drip Tee
5" Drip Tee
Dayton Vent Pipe
5" x 24" Vent Pipe
Dayton Vent Pipe
5" x 32" Adjustable Vent Pipe
Wall Thimble
5" Wall Pass Through
Vent Pipe Adapter
5" GG/TF Heater Adapter
Firestop Flashing
5" Firestop Flashing
Storm Collar
5" Storm Collar
5" Tee
tee cap
5" Tee Condensate Cap

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 ACF Greenhouses
380 Greenhouse Drive
Buffalo Junction, VA 24529
434-374-2706 Phone, 434-374-2055 Fax
888-888-9050 Toll Free

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