Upgrade Your Ductwork with UKIAF’s Professional-Grade Reducers!Upgrade Your Ductwork with the UKIAF 7" to 4" Galvanized Steel Duct Reducer. Engineered for durability and efficiency, this reducer adapter bridges size gaps in HVAC systems, exhaust vents, and industrial ducting with uncompromising precision. Crafted from premium galvanized steel, our air ducting reducer increaser withstands moisture, heat, and corrosion, ensuring decades of reliable service. The rigid crimped pipe ends create an airtight seal when fitted with standard duct clamps, eliminating energy-wasting leaks and maximizing system performance. Easy Installation, Professional Results Specifications: Sizes: 7" (177.8mm) to 4" (101.6mm) Style: Round, Crimped Ends Quantity: 2 Reducers per Order Applications: HVAC, Dryer Vents, Industrial Exhausts