{"product_id":"saver-systems-masonry-ventubes-12-pack","title":"Saver Systems Masonry VenTubes – Stainless Chimney Vent Tubes, Pack of 12","description":"\u003cp\u003e\u003cstrong\u003eVenTubes\u003c\/strong\u003e are small stainless steel tubes that give a masonry chimney cross ventilation. In chimneys with a large cavity around the flue liner, moisture condenses on the inside of the outer walls and causes efflorescence, spalling and freeze\/thaw damage. Saver Systems says VenTubes can eliminate up to 85% of the moisture that damages these chimneys. Buy from StoveSource and \u003cstrong\u003epay no sales tax\u003c\/strong\u003e in any state.\u003c\/p\u003e\n\u003ch3\u003eHow many you need\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCavity less than 16\": generally 4 VenTubes, two in each narrow side of the chimney, 4 to 6 courses down and about one brick length apart.\u003c\/li\u003e\n\u003cli\u003eCavity greater than 16\": generally 8 VenTubes, four in each long side, 4 to 6 courses down from the top, two on each side of the flue liner.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to install\u003c\/h3\u003e\n\u003cp\u003eDrill a 1\/2\" hole into a mortar joint, angled slightly upward to keep out blowing rain. Push the tube in until the screen is flush with the brick, then seal it with a small bead of clear silicone caulk.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo not install\u003c\/strong\u003e in chimneys with damaged, cracked or misaligned flue liners, or below the roof line or other combustible exposures.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePack: 12 tubes, part number 300182\u003c\/li\u003e\n\u003cli\u003eMaterial: 100% 304 series stainless steel\u003c\/li\u003e\n\u003cli\u003eSize: 1\/2\" diameter x 4 1\/2\" long\u003c\/li\u003e\n\u003cli\u003eA wire screen welded in the front keeps insects out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eData sheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/saversystems.s3.amazonaws.com\/product-data\/VenTubes.pdf\" target=\"_blank\" rel=\"noopener\"\u003eVenTubes product sheet and instructions (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eMore: \u003ca href=\"\/blogs\/guides\/chimney-sealer-guide\"\u003echimney sealer guide\u003c\/a\u003e · \u003ca href=\"\/collections\/chimney-repair-waterproofing\"\u003echimney repair and waterproofing products\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy buy from StoveSource:\u003c\/strong\u003e Authorized dealer · No Sales Tax · Free shipping over \u003cspan class=\"ss-fs-min\"\u003e$300\u003c\/span\u003e · Email or text 1-888-866-8206\u003c\/p\u003e","brand":"Saver Systems","offers":[{"title":"Default Title","offer_id":68072117141756,"sku":"300182","price":186.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/9944\/0892\/files\/COP24400__11589.jpg?v=1793835562","url":"https:\/\/stovesource.com\/products\/saver-systems-masonry-ventubes-12-pack","provider":"StoveSource","version":"1.0","type":"link"}