{"product_id":"royal-building-products-35-1596-4-in-single-duct-90-degree-gasketed","title":"Royal Building Products 35-1596 4 in Single Duct 90 Degree Gasketed","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROYAL BUILDING PRODUCTS 35-1596 is a 4-inch single duct 90-degree gasketed elbow fitting used in low-pressure duct systems. The gasketed design creates a sealed joint at the connection point, reducing air leakage at the elbow transition. This fitting directs airflow through a 90-degree change in direction and is a standard component in residential and light commercial ductwork assemblies. HVAC installers and sheet metal contractors typically use this fitting when routing round duct through tight spaces or around structural obstructions.\u003c\/p\u003e\u003cp\u003eThis elbow is suited for 4-inch round single duct installations in residential forced-air HVAC systems and light commercial applications. It is commonly installed in supply or exhaust branch runs where a 90-degree turn is required. The gasketed slip joint allows for a secure, low-leak connection to standard 4-inch duct sections without additional sealant in many configurations, though local code may require mastic or foil tape over all joints.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e90-degree elbow geometry for right-angle duct routing\u003c\/li\u003e\n\u003cli\u003eGasketed slip joint connection for reduced air leakage\u003c\/li\u003e\n\u003cli\u003eSized for 4-inch single duct systems\u003c\/li\u003e\n\u003cli\u003eCompatible with standard round duct fittings and sections\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 4-inch single duct replacement or new-installation fitting for residential and light commercial forced-air ductwork systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut down and de-energize the air handling system before making duct modifications. Local mechanical codes and ASHRAE standards may require all duct joints, including gasketed fittings, to be sealed with mastic or listed foil tape. Verify fitting orientation before finalizing the connection to ensure proper airflow direction.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElbow Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Gasketed slip joint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct Type\u003c\/strong\u003e: Single duct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 089938000474\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ROYAL BUILDING PRODUCTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 35-1596\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROYAL BUILDING PRODUCTS","offers":[{"title":"Default Title","offer_id":51383529570610,"sku":"35-1596","price":28.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312673962.jpg?v=1782599560","url":"https:\/\/voomisupply.com\/products\/royal-building-products-35-1596-4-in-single-duct-90-degree-gasketed","provider":"Voomi Supply","version":"1.0","type":"link"}