Pellet Stove Wall Thimble, Type L, 4-In.
4", 4vp-wt, pellet wall thimble, type l pellet vent, must be used for all thru the wall installations involving combustible construction.
4", 4vp-wt, pellet wall thimble, type l pellet vent, must be used for all thru the wall installations involving combustible construction.
