Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low View: 16 32 All Quick View Quick View 4” – 3” DUCT REDUCER Quick View Quick View 5” – 3” DUCT REDUCER $7.76 Quick View Quick View 6” – 5” DUCT REDUCER $9.99 Quick View Quick View 6” – 4” DUCT REDUCER Quick View Quick View 6” – 4” DUCT REDUCER Quick View Quick View 3”*10”*4” GALVANIZED ANGLE BOOT