{"product_id":"dayton-53dr18-shutter-wall-42","title":"DAYTON 53DR18 Shutter Wall 42","description":"\u003cp\u003eDAYTON 53DR18 42 In.H-W 5.75 In.L Aluminum Wall Fan Shutter Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Aluminum Number of Panels 1 Maximum Air Velocity 2500 fpm Overall Height 42 in Rough Opening Diameter 39 1\/2 in Rough Opening Shape Square Fits Fan Diameter 36 in For Duct Shape Not Applicable Free Area 8.5 sq ft Overall Width 42 in Frame Material Thickness 0.8 in Overall Length 5 3\/4 in Connection Type Not Applicable Frame Depth 3 in\u003c\/p\u003e","brand":"Grainger USA","offers":[{"title":"Default Title","offer_id":46660001333473,"sku":"QI7QKU","price":623.2,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/3729\/6609\/files\/2FTX1_AS01_d67cb305-2d5d-4c4d-a563-5c54f8bca820.jpg?v=1752576395","url":"https:\/\/www.industrialsource.com.au\/products\/dayton-53dr18-shutter-wall-42","provider":"Industrial Source","version":"1.0","type":"link"}