3" to 4" Diameter Appliance Adapter for AllFuel HST Pellet Stove Pipe - Black

The AllFuel HST Pellet Vent 3" to 4" Appliance Adapter connects a 3" pellet appliance to the 4" AllFuel HST Pellet Vent system. Designed specifically for AllFuel HST Pellet Vent components, it connects directly to a 3" appliance exhaust collar and transitions to 4" pellet vent pipe to create a secure starting point for your pellet vent system. The positive twist-lock connection provides a fast, secure fit without the need for screws or fasteners. Its dual-seal connection combines a metal-to-metal seal with an encapsulated O-ring gasket, eliminating the need for silicone during installation. Note: Some stove manufacturers require silicone sealant despite the internal gasket. Always check your appliance manual for assembly instructions. Built for durability, the AFPV4-SA3-4-BLK features a .019" thick TIG welded 444 stainless steel inner wall that resists corrosion from pellet, corn, and biofuel exhaust, along with a .019" laser welded Galvalume outer wall with a black finish for added strength and protection from the elements. The appliance adapter is backed by the AllFuel HST Limited Lifetime Warranty. Product Highlights Connects a 3" pellet appliance to the 4" AllFuel HST Pellet Vent system Designed for 4" AllFuel HST Pellet Vent Pipe and components Provides a 3" to 4" transition between the appliance and pellet vent system Positive twist-lock connection—no screws or fasteners required Primary metal-to-metal seal with encapsulated O-ring secondary seal No silicone required during assembly (see appliance manufacturers instructions) .019" TIG welded 444 super-ferritic stainless steel inner wall .019" laser welded Galvalume outer wall painted black Compatible with wood, corn, and approved biofuel-burning appliances Available in raw Galvalume or Black powder-coated finish UL Listed to UL 641 (U.S.) and ULC-S629 (Canada) Backed by the AllFuel HST Limited Lifetime Warranty For Installation Instructions please click here.