{"product_id":"dayton-53dr20-shutter-wall-25","title":"DAYTON 53DR20 Shutter Wall 25","description":"\u003cp\u003eDAYTON 53DR20 25 In.H-W 6 In.L Aluminum Backdraft Damper Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Galvanized Steel Number of Panels 1 Maximum Air Velocity 2000 fpm Overall Height 25 in Rough Opening Diameter 22 1\/2 in Rough Opening Shape Square Fits Fan Diameter 20 in For Duct Shape Not Applicable Free Area 2.5 sq ft Overall Width 25 in Frame Material Thickness 20 ga Overall Length 6 in Connection Type Not Applicable Frame Depth 2 1\/4 in\u003c\/p\u003e","brand":"Grainger USA","offers":[{"title":"Default Title","offer_id":46660001595617,"sku":"AB5ZIZ","price":214.65,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/3729\/6609\/files\/2C517_AS01_7347c841-089c-495f-8230-fb9c36625b9d.jpg?v=1752576399","url":"https:\/\/www.industrialsource.com.au\/products\/dayton-53dr20-shutter-wall-25","provider":"Industrial Source","version":"1.0","type":"link"}