Allows outside fresh air to enter the wall thimble for combustion without the need for a second hole. Drafts are reduced by using an insulation ring. Includes clamps 2" dia. x 18" long flex hose expands to 4. Use with 3" PelletVent Pro pipes. A venting pipe with a 3" inner diameter is required for this unit. No one wants to have to drill holes in their walls, but you may not have a choice if you're installing a pellet-burning appliance. With this DuraVent PelletVent Pro 3" Wall Thimble Air Intake Kit, you can at least decrease the amount of decisions you have to make. This innovative item allows you to avoid drilling a second hole in your wall by letting you to bring combustion air via your wall thimble. That means your installation will be easier, and your appliance venting system will have a smaller visible impact on its surroundings. There are no drawbacks to using one of these wall thimble air intake devices. PelletVent Pro is a venting solution for wood pellet and oil-fueled stoves and inserts. (Rated for continuous usage at flue temperatures of up to 570°F.) Made of laser-welded double-wall pipe with an inner wall of .012" stainless steel and a .018" laser-welded galvalume outer wall. You can choose a painted black exterior. 1" clearance to combustibles in the USA for appliances using wood pellets or oil. 1" clearance to combustibles in Canada for oil-burning (type L vent) appliances. 3" clearance to combustibles in Canada for wood pellet-burning appliances. Listings - c-UL-us Listed to UL 641 (MH8381 and MH14420). ULC Listed to ULC S609. ULC/ORD C441 (CMH1439 and CMH1440). DuraVent Dura-Vent Item Number: 3PVP-WTI

Allows outside fresh air for combustion to come through the wall thimble without requiring a second hole Insulation ring reduces drafts Includes clamps 2" dia. x 18" long flex hose expands to 4 For use with 3" PelletVent Pro pipes