4 in RWT Wall Thimble

SPECIAL ORDER ITEM. Review Returns Policy before purchase. The Hart & Cooley Type B Gas Vent collection wall thimble provides a safe pass-through for vent pipe installations through combustible walls. Designed to maintain proper clearance between the vent and surrounding construction materials, it helps support safe venting for gas appliances. The adjustable design accommodates different wall thicknesses, allowing easier installation in residential venting systems. Made from durable galvanized steel, it offers reliable protection and structural support.