Selkirk 3" to 4" Increaser (Pellet Vent - UPP - Type L / PL) d20.9 Burn time: 8 hours

Burn time: 8 hours

000 BTU's adjustable control

Requires SL1100 series pipe

One part covers 2 diameters

Selkirk 3" to 4" Increaser (Pellet Vent - UPP - Type L / PL) d20.9 Burn time: 8 hoursSelkirk 3" to 4" Increaser (Ultimate Pellet Pipe Type L PL) Transition from a 3" to a 4" UPP. Painted black or unpainted. Pellet Vent UPP Type L PL The superior silicone gasket technology seals the system and provides a leak free connection. Easy to assemble for safe and secure connection. Easy to disassemble for inspection and cleaning. Laser welded inner and outer pipes ensure a consistently round pipe with a clean profile. 3" to 4" Diameters: Easy