7 inch to 4 inch Dia Duct Reducer Galvanized Steel Air Duct Adapter Metal Pipe Increaser Connector,Vent Reducer for Bathroom Kitchen Ventilation Systems

Features: >All-in-One Functionality: Integrates Duct Reducer Duct Increaser Air Duct Adapter Duct Connector Pipe Coupler Vent Flange Connector into a single Round Duct Fitting, no need to purchase multiple accessories for different connection needs. >Industrial-Grade Durability: Galvanized Steel Galvanized Iron construction ensures Long Lasting use, far superior to flimsy plastic alternatives, perfect for Residential Commercial Industrial long-term use. >Efficiency & Sealing: Tapered Design Pressed Tapered optimizes airflow for Inline Venting Dust Collection Exhaust System, Raised Lips Rolled Edges and Crimped End Male Fit ensure a tight Secure Fit and Airtight Seal with Hose Clamp/Foil Tape Compatible fasteners. >Universal Scene Adaptation: Works seamlessly with Dryer Vent, Range Hood, Bathroom Extractor Fan, Grow Tent, Portable AC and all HVAC Heating & Cooling systems, solving all your ventilation connection troubles in one go. >Whether you’re upgrading your home’s Bathroom Extractor Fan or Dryer Vent, setting up a Grow Tent ventilation system, installing a Range Hood or Portable AC exhaust, or building a professional HVAC Dust Collection Inline Venting setup for commercial/industrial use, this 7 Inch to 4 Inch Duct Reducer Duct Increaser delivers unbeatable performance, durability and ease of use-your go-to Round Duct Fitting for all ventilation projects!Specifications: - Materail: Galvanized steel. -Size:7Inch(outer diameter,large end) to 4 Inch(outer diameter,small end) Height:5.91Inch(150mm). - Color: Silver. - Package Included: 1 x Duct Reducer Duct Increaser Round Duct Fitting (Hose Clamp/foil tape not included)

• Precise size transition, compatible with multiple types of air ducts:Perfectly transitions 7 Inch to 4 Inch ductwork, compatible with spiral ducts, rigid metal pipes, flexible duct hoses, and PVC pipes. Solves mismatched duct size issues for all scenarios—from home small appliances to commercial ventilation equipment, no need for extra adapters.
• Galvanized steel material, durable and corrosion-resistant:Crafted from heavy-duty galvanized steel (thickness 0.6mm) with anti-rust surface treatment. Resists moisture, corrosion, and temperature fluctuations (like bathroom steam, kitchen oil fumes, or industrial dust)，ensuring long-lasting performance for HVAC heating & cooling systems.
• Cone+edge pressing design, optimized airflow without leakage:Precision tapered structure reduces airflow turbulence and pressure loss, maintaining optimal ventilation efficiency. Crimped small end fits snugly into smaller ducts, with raised rolled lips on both openings—secure with hose clamps or foil tape (not included) for an airtight seal, avoiding energy waste.
• Easy Installation, no need for professional tools:User-friendly push-fit design: insert duct into the large end 7 Inch and small end 4 Inch, then fasten with fasteners—no professional tools needed. Polished edges prevent scratches during installation, suitable for home, garage, basement, or workshop use.
• Multi functional accessories to solve pain points in multiple scenarios:Essential fitting for portable AC exhaust hoses, dust collection units, dryer vents, and kitchen range hoods. Works with inline fans, bathroom extractors, and grow tent ventilation—one adapter meets all 7 Inch to 4 Inch duct connection needs.