{"product_id":"southwark-metal-st90528-straight-elbow-adjustable-0-to-90-degree-5-inches-28-gauge-galvanized-steel-round-duct-fitting","title":"Southwark Metal ST90528 Straight Elbow Adjustable 0 to 90 Degree 5 Inches 28 Gauge Galvanized Steel Round Duct Fitting","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Southwark Metal ST90528 is a round galvanized steel straight elbow designed for use in residential and commercial HVAC ductwork systems. This fitting starts as a straight connector and adjusts to form a full 90 degree elbow, giving installers the flexibility to route duct runs without needing multiple fixed-angle fittings on the job. The ST90528 is sized at 5 inches in diameter and fabricated from 28 gauge hot dipped galvanized steel that meets ASTM A653 CS Type B standards. That coating provides reliable corrosion resistance, making this fitting well suited for both supply and return air applications in forced air systems. HVAC technicians and sheet metal contractors rely on fittings like this to make clean, airtight connections in tight spaces where fixed elbows are impractical. The male end features a crimp and bead connection with a 1 inch crimp length for a secure friction fit into standard round duct. The straight female end accepts the next duct section and includes a 1\/2 inch overlap designed for riveting using 1\/8 inch rivets. The RL-2 rivet seam construction supports pressure ratings of plus or minus 4 inches water gauge at the seam and plus or minus 2 inches water gauge overall, meeting standard low pressure duct system requirements. The 4 piece assembly format is used for 3 inch through 20 inch diameter sizes, making the ST90528 part of a consistent product family for round duct installations. Sold as a single unit, this fitting is a reliable choice for trunk line changes, branch duct routing, and equipment connections across a wide range of residential and light commercial HVAC jobs. Made in the USA.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAdjustable from straight to 90 degrees for flexible duct routing on the job\u003c\/li\u003e\n\u003cli\u003eCrimp and bead male end with 1 inch crimp length and straight female end with 1\/2 inch rivet overlap\u003c\/li\u003e\n\u003cli\u003eHot dipped galvanized steel per ASTM A653 CS Type B rated for plus or minus 2 inches water gauge overall pressure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe Southwark Metal ST90528 delivers field-adjustable 0 to 90 degree duct routing in a durable 28 gauge galvanized steel construction, built to standard low pressure duct system specifications for reliable HVAC installations.\u003c\/p\u003e\u003ch3\u003eProduct Information\u003c\/h3\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SOUTHWARK METAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ST90528\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGauge\u003c\/strong\u003e: 28 GA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Galvanized Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Hot Dipped Galvanized per ASTM A653 CS Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBend Angle Range\u003c\/strong\u003e: 0 to 90 Degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrimp Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRivet Overlap\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRivet Size\u003c\/strong\u003e: 1\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeam Type\u003c\/strong\u003e: RL-2 Rivet Seam\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating (Seam)\u003c\/strong\u003e: Plus or Minus 4 inches Water Gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating (Overall)\u003c\/strong\u003e: Plus or Minus 2 inches Water Gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembly\u003c\/strong\u003e: 4 Piece (3 inches through 20 inches diameter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.76 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51120902177074,"sku":"ST90528","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/304885339.webp?v=1777742833","url":"https:\/\/voomisupply.com\/products\/southwark-metal-st90528-straight-elbow-adjustable-0-to-90-degree-5-inches-28-gauge-galvanized-steel-round-duct-fitting","provider":"Voomi Supply","version":"1.0","type":"link"}