{"product_id":"dayton-4yn18-36-in-38-75-h-w-4-5-l-alu-intake-shutter-dampr-37-in-x-37-in-aluminum","title":"Dayton 4YN18 - 36 in 38.75\"H-W 4.5\"L Alu Intake Shutter Dampr, 37 in x 37 in, Aluminum","description":"\u003cp\u003e38.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 38 3\/4 in, Rough Opening Diameter 37 in, Rough Opening Shape Square, Fits Fan Diameter 36 in, For Duct Shape Not Applicable, Free Area 6.6 sq ft, Overall Width 38 3\/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1\/2 in, Connection Type Not Applicable, Frame Depth 1 5\/8 in, Rough Opening Length 37 in\u003c\/p\u003e","brand":"DAYTON","offers":[{"title":"Default Title","offer_id":43253095137374,"sku":"4YN18","price":300.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Z1KCp-fo5oy.jpg?v=1788365784","url":"https:\/\/nationalboilersupply.com\/products\/dayton-4yn18-36-in-38-75-h-w-4-5-l-alu-intake-shutter-dampr-37-in-x-37-in-aluminum","provider":"National Boiler Supply","version":"1.0","type":"link"}