{"product_id":"southwark-311818-694288","title":"Southwark 311818, 18x18 Return Air Frame, Silver Galvanized Steel","description":"\u003cp\u003eThe Southwark 311818 is a 18x18 silver hot dipped galvanized steel per astm a653 cs type b accessory, built to install in the duct run. A direct upgrade or replacement for a worn or builder-grade hvac air distribution accessory in homes, offices and light-commercial spaces.\u003c\/p\u003e\n\u003cp\u003eFor the installer: The listed size is the duct opening size, not the overall faceplate — measure the opening, not the old face. Material gauge: 30 GA. Country of origin: USA.\u003c\/p\u003e\n\u003cp\u003eHowdy Brewer ships genuine Southwark product. Manufacturer part number 311818.\u003c\/p\u003e","brand":"Southwark","offers":[{"title":"Default Title","offer_id":52022229762264,"sku":"311818","price":36.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8725\/6536\/files\/southwark_31-return-air-frame_en_normal_cc072771-94a7-4695-bceb-6cd45bd0150f.jpg?v=1784862176","url":"https:\/\/www.howdybrewer.com\/products\/southwark-311818-694288","provider":"HowdyBrewer","version":"1.0","type":"link"}