{"product_id":"metal-fab-r-4m4-m-series-type-b-double-wall-round-gas-vent-pipe-aluminum-4-in-dia-x-4-ft-l-domestic","title":"METAL-FAB® 4M4 M Series Type B Double Wall Round Gas Vent Pipe, Aluminum, 4 in Dia x 4 ft L, Domestic","description":"\u003cp\u003eMetal-Fab's round and oval Type-B vent is listed by Underwriters Laboratories for use with approved category 1 gas furnaces, heaters, and boilers. A category 1 appliance operates with a non-positive vent static pressure. The double wall design of B-vent enables the product to be used in homes and commercial buildings at close clearance to combustible. Metal-Fab's B-vent design incorporates features that make installation quick, easy, and safe.\u003c\/p\u003e","brand":"METAL-FAB","offers":[{"title":"Default Title","offer_id":53407646253345,"sku":"MET4M4","price":37.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/Metal_Fab_10M24_e3de2f5b-979c-4dfb-bec6-04eaa7a83b74.jpg?v=1787945679","url":"https:\/\/standardvmi.com\/products\/metal-fab-r-4m4-m-series-type-b-double-wall-round-gas-vent-pipe-aluminum-4-in-dia-x-4-ft-l-domestic","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}