3 in RWT Wall Thimble

SPECIAL ORDER ITEM. Review Returns Policy before purchase. The Hart & Cooley RWT Series wall thimble provides a safe pass-through for vent pipes through combustible walls in residential venting systems. Designed to maintain proper clearance between the vent and surrounding construction materials, it helps support safe operation of gas vent installations. The adjustable design accommodates varying wall thicknesses for easier installation in different applications. Constructed from durable galvanized steel, this wall thimble offers reliable protection and structural support as part of a complete Type B gas vent system.