Home / Brand / Superior / Kit, HeatFlo Flex Extension, 4.5″ DIA “45 Degree Elbow” has been added to your cart. View cart Kit, HeatFlo Flex Extension, 4.5″ DIA$427.00 Out of stock SKU: F4578 Categories: Superior, Venting Additional information Additional information Weight 26 lbs Dimensions 61 × 10.25 × 14.25 in Brand Superior Related products 36″ DV Length – Rigid $181.00 -Add to cart 12″ DV Length – Rigid $139.00 -Add to cart Horizontal Firestop – Rigid $79.00 -Add to cart