{"product_id":"harvia-steel-chimney-extensions-and-accessory-kits","title":"Harvia Steel Chimney Extensions and Accessory Kits | WHP1000500 WHP-AS WHP-ASSYM","description":"\u003cstyle\u003e\n.rca-pdp{font-family:Arial,sans-serif;font-size:15px;line-height:1.7;color:#232323;width:100%;max-width:100%;margin:0;padding:0;box-sizing:border-box}\n.rca-pdp *{box-sizing:border-box;max-width:100%}\n.rca-pdp h2{font-size:22px;font-weight:bold;color:#232323;margin:0 0 12px;line-height:1.3}\n.rca-pdp h3{font-size:18px;font-weight:bold;color:#232323;margin:28px 0 12px}\n.rca-pdp p{margin:0 0 20px}\n.rca-pdp ul,.rca-pdp ol{margin:0 0 28px;padding-left:20px;line-height:1.7;color:#232323}\n.rca-pdp li{margin-bottom:8px}\n.rca-pdp a{color:#323f4e;text-decoration:underline;text-underline-offset:2px}\n.rca-pdp .rca-note{font-size:14px;color:#3F7276;margin-bottom:16px}\n.rca-pdp .rca-flex{display:flex;gap:16px;margin-bottom:28px;flex-wrap:wrap}\n.rca-pdp .rca-box{flex:1 1 260px;min-width:0;border-radius:6px;padding:16px}\n.rca-pdp .rca-box ul{margin:0;padding-left:20px}\n.rca-pdp .rca-best{background:#E8F5E9;border-left:4px solid #4CAF50}\n.rca-pdp .rca-not{background:#FFEBEE;border-left:4px solid #EF5350}\n.rca-pdp .rca-why{background:#E8F4F8;border-left:4px solid #539499;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-warn{background:#FFF8E1;border-left:4px solid #F5C842;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-req{background:#F5F5F5;border-left:4px solid #CCCCCC;border-radius:6px;padding:16px;margin-bottom:28px}\n.rca-pdp .rca-label{margin:0 0 6px;font-size:13px;font-weight:bold;text-transform:uppercase;letter-spacing:.5px;color:#232323}\n.rca-pdp table{border-collapse:collapse;width:100%;margin-bottom:16px}\n.rca-pdp caption{text-align:left;font-size:14px;color:#3F7276;padding-bottom:8px}\n.rca-pdp th{background:#3F7276;color:#fff;font-weight:bold;padding:10px 12px;text-align:left;font-size:14px}\n.rca-pdp td{padding:10px 12px;border-bottom:1px solid #e5e5e5;color:#232323;vertical-align:top}\n.rca-pdp tbody tr:nth-child(odd){background:#F9F9F9}\n.rca-pdp .rca-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}\n.rca-pdp .rca-swipe{display:none}\n.rca-pdp details{margin-bottom:12px;border-bottom:1px solid #e5e5e5;padding-bottom:12px}\n.rca-pdp summary{font-weight:bold;cursor:pointer;color:#232323;padding:12px 0;min-height:44px;line-height:1.4}\n.rca-pdp details p{padding:10px 0 4px;margin:0}\n@media (max-width:640px){\n.rca-pdp{font-size:16px;padding:0 12px}\n.rca-pdp h2{font-size:20px;line-height:1.35}\n.rca-pdp h3{font-size:17px}\n.rca-pdp .rca-box{min-width:100%}\n.rca-pdp table{font-size:13px}\n.rca-pdp th{padding:8px 6px;font-size:12px;line-height:1.3}\n.rca-pdp td{padding:8px 6px;line-height:1.4;overflow-wrap:anywhere}\n.rca-pdp td:first-child{font-weight:bold}\n.rca-pdp .rca-wide{min-width:640px}\n.rca-pdp .rca-swipe{display:block;font-size:12px;color:#3F7276;margin-bottom:16px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rca-pdp\"\u003e\n\n\n\u003ch2\u003eHarvia Steel Chimney Extensions: adding height to a Harvia steel chimney\u003c\/h2\u003e\n\n\u003cp\u003eA Harvia steel chimney is sold as a base kit sized for a typical room. Taller rooms, or a roof further away than the kit allows, need extending. These are the parts that do it: the WHP1000500 extension in stainless steel and the WHP1000500M in black, plus the WHP-AS tilted accessory kit and the WHP-ASSYM and WHP-ASSYMM symmetric kits for the roof penetration. Harvia rates the assembled chimney as self-supporting to 3 metres indoors and 2 metres outdoors.\u003c\/p\u003e\n\n\u003ch3\u003eExtension or accessory kit\u003c\/h3\u003e\n\n\u003cp\u003eThe extensions add length to the run. The accessory kits handle where the chimney leaves the building. The tilted kit suits a pitched roof, the symmetric kits a flat or near-flat penetration, and the M suffix on the WHP-ASSYMM means the black finish rather than stainless. Pick the finish to match the chimney you already have, because the two do not sit well together on a visible run.\u003c\/p\u003e\n\n\u003ch3\u003eThe self-supporting limit\u003c\/h3\u003e\n\n\u003cp\u003eHarvia rates the chimney self-supporting to 3 metres indoors and 2 metres outdoors. Past that it needs bracing, and bracing is a structural decision rather than a parts decision. If your run is longer than those figures, tell us before ordering so we can check what the installation needs.\u003c\/p\u003e\n\n\u003cdiv class=\"rca-warn\"\u003e\n\u003ch4 class=\"rca-label\"\u003eBEFORE YOU ORDER: WHAT HARVIA DOES NOT PUBLISH ON THESE PARTS\u003c\/h4\u003e\n\u003cp style=\"margin:0;\"\u003eHarvia publishes no pipe diameter and no section length for the WHP1000500 and WHP1000500M on its own product pages. The name and the 1550 mm carton imply a 1.5 metre section, but Harvia states neither the bore nor the length anywhere, so we will not print a figure we cannot source. Confirm the bore of your existing chimney with us before ordering. The three accessory kits, WHP-AS, WHP-ASSYM and WHP-ASSYMM, have no Harvia model page at all, so everything we hold on them comes from the supplier inventory sheet. Chimney work is a job for a certified installer and is usually subject to local permit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eBenefits and Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExtends an existing Harvia steel chimney rather than replacing it\u003c\/li\u003e\n\u003cli\u003eStainless steel or black powder coated, so the run stays one finish\u003c\/li\u003e\n\u003cli\u003eSelf-supporting to 3 metres indoors and 2 metres outdoors\u003c\/li\u003e\n\u003cli\u003eTilted and symmetric accessory kits for the roof penetration\u003c\/li\u003e\n\u003cli\u003eCompatible with 31 Harvia wood heater models\u003c\/li\u003e\n\u003cli\u003eMade in Finland\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"rca-flex\"\u003e\n\u003cdiv class=\"rca-box rca-best\"\u003e\n\u003cp class=\"rca-label\"\u003eBEST FOR\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRooms with a ceiling higher than the base chimney kit covers\u003c\/li\u003e\n\u003cli\u003eRuns where the roof penetration needs a tilted or symmetric kit\u003c\/li\u003e\n\u003cli\u003eReplacing a damaged section on an existing Harvia steel chimney\u003c\/li\u003e\n\u003cli\u003eMatching a black chimney rather than mixing finishes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rca-box rca-not\"\u003e\n\u003cp class=\"rca-label\"\u003eNOT IDEAL FOR\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMasonry chimneys. These are for the Harvia steel system only\u003c\/li\u003e\n\u003cli\u003eRuns longer than 3 metres indoors without additional bracing\u003c\/li\u003e\n\u003cli\u003eAnyone who has not confirmed their existing chimney bore\u003c\/li\u003e\n\u003cli\u003eSelf-installation. Chimney work needs a certified installer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"rca-swipe\"\u003eSwipe to see the full table\u003c\/p\u003e\n\u003cdiv class=\"rca-scroll\" tabindex=\"0\" role=\"region\" aria-label=\"Harvia Steel Chimney Extensions and Accessory Kits | WHP1000500 WHP-AS WHP-ASSYM specifications\"\u003e\n\u003ctable class=\"rca-wide\"\u003e\n\u003ccaption\u003eHarvia steel chimney extensions and accessory kits. WHP-AS, WHP-ASSYM and WHP-ASSYMM have no Harvia model page, so their data comes from the supplier inventory sheet. Pipe diameter and section length are not published by Harvia for the extensions.\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eWhat it is\u003c\/th\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003cth\u003ePacked length\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWHP1000500\u003c\/td\u003e\n\u003ctd\u003eChimney extension, no kit\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003ctd\u003e1550 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWHP1000500M\u003c\/td\u003e\n\u003ctd\u003eChimney extension, no kit\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003e1550 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWHP-AS\u003c\/td\u003e\n\u003ctd\u003eChimney tilted accessory kit\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003ctd\u003eNot published by Harvia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWHP-ASSYM\u003c\/td\u003e\n\u003ctd\u003eChimney symmetric accessory kit\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003ctd\u003eNot published by Harvia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWHP-ASSYMM\u003c\/td\u003e\n\u003ctd\u003eChimney symmetric accessory kit\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eNot published by Harvia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelf-supporting, indoors\u003c\/td\u003e\n\u003ctd\u003eMaximum unbraced run\u003c\/td\u003e\n\u003ctd\u003e3 m\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelf-supporting, outdoors\u003c\/td\u003e\n\u003ctd\u003eMaximum unbraced run\u003c\/td\u003e\n\u003ctd\u003e2 m\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlso Consider\u003c\/h3\u003e\n\u003cp\u003eFor the pipe between the stove and the chimney rather than the chimney itself, see the Harvia smoke pipe and fittings. For a complete chimney rather than an extension, the Harvia WHP1500 chimney kit is the starting point. For the stove, see our \u003ca href=\"\/collections\/stoves-and-heaters\"\u003ewood burning sauna stoves\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhy buy this from RecovAthlete\u003c\/h3\u003e\n\u003cdiv class=\"rca-why\"\u003e\n\u003cp style=\"margin:0;\"\u003eChimney parts are the easiest thing in this catalogue to order wrong, because the finish and the bore both have to match what is already on the building. Send us a photo of the existing run and the stove model and we will tell you which parts fit. We stock the pipe, the dampers and the flanges alongside these. Call 866-861-6317, 9am to 6pm EST, Monday to Friday, or \u003ca href=\"https:\/\/calendly.com\/recvoathlete\/30min\"\u003ebook a call\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eQuestions buyers ask\u003c\/h3\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat diameter are the extensions?\u003c\/summary\u003e\n\u003cp\u003eHarvia does not publish a bore or a section length for the WHP1000500 or the WHP1000500M on its product pages. Confirm your existing chimney bore with us before ordering rather than assuming from the part name.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow high can the chimney go without bracing?\u003c\/summary\u003e\n\u003cp\u003eHarvia rates the assembled chimney self-supporting to 3 metres indoors and 2 metres outdoors. A longer run needs bracing, which is a structural decision.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between the tilted and symmetric kits?\u003c\/summary\u003e\n\u003cp\u003eThe tilted kit, WHP-AS, suits a pitched roof penetration. The symmetric kits, WHP-ASSYM in stainless and WHP-ASSYMM in black, suit a flat or near-flat penetration.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eDo these fit a masonry chimney?\u003c\/summary\u003e\n\u003cp\u003eNo. These are parts for the Harvia steel chimney system. A masonry chimney takes the WZ011115 masonry connector instead.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Harvia","offers":[{"title":"WHP1000500 | chimney extension | stainless steel","offer_id":49731338633368,"sku":"WHP1000500","price":1290.0,"currency_code":"USD","in_stock":true},{"title":"WHP1000500M | chimney extension | black","offer_id":49731338666136,"sku":"WHP1000500M","price":1458.0,"currency_code":"USD","in_stock":true},{"title":"WHP-AS | tilted accessory kit | stainless steel","offer_id":49731338698904,"sku":"WHP-AS","price":461.0,"currency_code":"USD","in_stock":true},{"title":"WHP-ASSYM | symmetric accessory kit | stainless steel","offer_id":49731338731672,"sku":"WHP-ASSYM","price":461.0,"currency_code":"USD","in_stock":true},{"title":"WHP-ASSYMM | symmetric accessory kit | black","offer_id":49731338764440,"sku":"WHP-ASSYMM","price":461.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0422\/3942\/6712\/files\/2354.jpg?v=1787500248","url":"https:\/\/recovathlete.com\/products\/harvia-steel-chimney-extensions-and-accessory-kits","provider":"RecovAthlete","version":"1.0","type":"link"}