Selkirk 244460 4VP-WT Type L 4" Pellet Stove Chimney Pipe Wall Thimble

New 4", Part # 4VP-WT, Type L Pellet Stove Chimney Pipe Wall Thimble from Selkirk Corp model 244460 item 154830 Selkirk 4", 4VP-WT, Pellet Wall Thimble 4" inch, 4VP-WT, Pellet Wall Thimble. Type L pellet vent must be used for all through-the-wall installations, involving combustible construction. Maintains airspace clearance with combustibles and centers the pipe between the walls. Telescopic design can be used on standard walls 5" to 9" Inch thick. Rolled over male end eliminates sharp edges and internal spacing bead assures uniform insulating air space between pipe walls. Type L Pellet Vent Thimble Maintains airspace clearance with combustibles and centers the pipe between the walls Telescopic design can be used on standard walls 5" to 9" Inch thick Rolled over male end eliminates sharp edges Must Be Used For All Thru The Wall Installations Involving Combustible Construction.