Selkirk 104325 Gas Vent Double Wall Increaser, 4" x 5", #4RV-15DW Autumn_Cleaning Easy to touch-up

Easy to touch-up

(2) Ibuprofen tablets

For overlaying concrete & as a bedding mix & joint grout for flagstone

Clear lacquered finish

Selkirk 104325 Gas Vent Double Wall Increaser, 4" x 5", #4RV-15DW Autumn_Cleaning Easy to touch-upSelkirk RV round vent pipe is a Listed Type Bgas vent pipe. Its adjustable fittings and standard short lengths eliminate all cutting, fitting and special engineering. An improved joint design provides for a rapid and secure connection in seconds. The use of LockTab feature gives installers the option of engaging this tab instead of using sheet metal screws. Gas vent double wall increaser 4RV I5DW 4" x 5" Selkirk RV round vent pipe is a Listed Type