{"title":"12x18 Pergolas","description":"\u003cp style=\"margin-top: -45px;\"\u003eWe offer a wide selection of \u003cstrong\u003e12x18 pergola\u003c\/strong\u003e kits, including both \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/type_free-standing\"\u003efree-standing\u003c\/a\u003e and \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/type_attached-to-house\"\u003ehouse-attached\u003c\/a\u003e kits, those with \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/roof-style_shade-canopyies\"\u003eshade canopies\u003c\/a\u003e and those made for a \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/roof-style_wood-slats\"\u003eslatted wood roof\u003c\/a\u003e, and some made for smaller \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/bracket-size_4x4\"\u003e4x4\u003c\/a\u003e wood frames and others for larger \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/bracket-size_6x6\"\u003e6x6s\u003c\/a\u003e. Use the \u003cspan style=\"background: #FFD93A; padding: 2px 4px 2px 4px; border-radius: 4px;\"\u003efiltering options\u003c\/span\u003e below to quickly find the perfect 2-block pergola kit for your outdoor space.\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"background: #F6F6F6; border-radius: 4px; padding: 12px; text-align: center; margin: 25px 0px -10px 0px;\"\u003e\n\u003cspan style=\"color: #bf262f;\"\u003e\u003ci class=\"fa-solid fa-magnifying-glass\"\u003e\u003c\/i\u003e  \u003cstrong\u003eSIMILAR SIZES:\u003c\/strong\u003e\u003c\/span\u003e  \u003ca href=\"https:\/\/zenpergolas.com\/collections\/10x18-pergolas\"\u003e10x18 pergolas\u003c\/a\u003e  |  \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x16-pergolas\"\u003e12x16 pergolas\u003c\/a\u003e  |  \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x20-pergolas\"\u003e12x20 pergolas\u003c\/a\u003e  |  \u003ca href=\"https:\/\/zenpergolas.com\/collections\/18x12-pergolas\"\u003e18x12 pergolas\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- split --\u003e\n\u003ch3\u003e12x18 Refers to the Combined Inner Dimensions of the \u003cem\u003e2 Roof Openings\u003c\/em\u003e\n\u003c\/h3\u003e\n\u003cp\u003eWhen we say a pergola's dimensions are 12x18, we are referring to the combined inside dimensions of the 2 roof openings (inside-edge to inside-edge). All of the kits featured on this page are meant to have 2 roof openings that are \u003cstrong\u003eboth 12' wide\u003c\/strong\u003e and which \u003cu\u003ecombine\u003c\/u\u003e to be a \u003cstrong\u003etotal of 18' deep\u003c\/strong\u003e. (\u003cu\u003eNote\u003c\/u\u003e: If you choose a kit made for a \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/roof-style_wood-slats\"\u003eslatted wood roof\u003c\/a\u003e, the combined depth of the 2 roof openings can be divided any way you'd like: both 9' deep \u003cstrong\u003eor\u003c\/strong\u003e one 9.5' and one 8.5' deep \u003cstrong\u003eor\u003c\/strong\u003e one 10' and one 8' deep \u003cstrong\u003eor\u003c\/strong\u003e any other combination that adds up to 18 feet.)\u003c\/p\u003e\n\u003cp\u003eThe overall outside-edge to outside-edge dimensions of the pergola will be:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e12' 7.3\" wide x 19' 2.6\" deep (if you choose a \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/bracket-size_4x4\"\u003ekit for 4x4 posts\u003c\/a\u003e) \u003cstrong\u003eOR\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e12' 11.3\" wide x 19' 10.6\" deep (if you choose a \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/bracket-size_6x6\"\u003ekit for 6x6 posts\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith all of this being said, you can easily change the overall size of your pergola by \u003cstrong\u003etrimming the wood posts\u003c\/strong\u003e that you plan to use for the roof beams. For example, if you wanted the true outside-edge to outside-edge dimensions of a free-standing pergola to be exactly 12' x 18', you would need to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePurchase three 12-foot posts to be the beams running the 12-foot width, and then cut off 7.3 inches (for 4x4 wood posts) or 11.3 inches (for 6x6 wood posts) from each one; and\u003c\/li\u003e\n\u003cli\u003ePurchase \u003cu\u003etwo sets\u003c\/u\u003e of two posts totaling 18 feet to be the beams running the 18-foot depth, and then cut off a total of 14.6 inches (for 4x4 wood posts) or 22.6 inches (for 6x6 wood posts) \u003cu\u003eper set\u003c\/u\u003e of two posts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cu\u003eImportant Note\u003c\/u\u003e: Our shade canopies are specifically designed to fit roof openings that are exactly 8x8, 8x10, 8x12, 10x10, 10x12 and 12x12. If you're purchasing a \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x16-pergolas\/roof-style_shade-canopyies\"\u003ekit with shade canopies\u003c\/a\u003e, you \u003cstrong\u003ecannot\u003c\/strong\u003e trim down the roof beam posts. Furthermore, all roof posts must be 8-, 10- or 12-foot lengths.\u003c\/p\u003e\n\u003ch3\u003eReminder: Width \u0026amp; Depth Are \u003cu\u003eNot\u003c\/u\u003e Always Interchangeable\u003c\/h3\u003e\n\u003cp\u003e12' x 18' pergolas are different from \u003ca href=\"https:\/\/zenpergolas.com\/collections\/18x12-pergolas\"\u003e18' x 12' pergolas\u003c\/a\u003e. The \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/type_attached-to-house\"\u003ewall-mounted pergolas\u003c\/a\u003e on this page will attach to your home on the 12' width side and come 18' out from the house wall. For \u003ca href=\"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/type_free-standing+roof-style_wood-slats\"\u003efree-standing pergolas with a slatted roof\u003c\/a\u003e, the roof rafters will be mounted to the beams on the 18' side and run the 12-foot width of the pergola (providing more shade when the afternoon\/evening sunlight comes from the \u003cstrong\u003e12-foot width side\u003c\/strong\u003e). If your afternoon\/evening sunlight will come from the 18-foot side, you'll want an \u003ca href=\"https:\/\/zenpergolas.com\/collections\/18x12-pergolas\"\u003e18x12 pergola\u003c\/a\u003e instead.\u003c\/p\u003e","products":[{"product_id":"12x18-pergola-with-roof-free-standing-diy-kit","title":"Free-Standing 12' x 18' Pergola with Roof","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"No roof (frame only)","offer_id":42226050465972,"sku":"Free12x18Lg","price":1199.0,"currency_code":"USD","in_stock":true},{"title":"Straight inline 2x6 slats [+$360]","offer_id":42801275568308,"sku":"Free12x18Lg-26IBx24","price":1559.0,"currency_code":"USD","in_stock":true},{"title":"2x6 rafters atop beams [+$552]","offer_id":42801275601076,"sku":"Free12x18Lg-26RBx24","price":1751.0,"currency_code":"USD","in_stock":true},{"title":"Inline 6x6 posts [+$252]","offer_id":42801275633844,"sku":"Free12x18Lg-66IBx12","price":1451.0,"currency_code":"USD","in_stock":true},{"title":"Angled 2x6 slats [+$540]","offer_id":42801275666612,"sku":"Free12x18Lg-26IBx36","price":1739.0,"currency_code":"USD","in_stock":true},{"title":"Shade canopies [+$370]","offer_id":43205605851316,"sku":"Free12x18Lg-CPY812B-CPY1012B","price":1569.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/products\/Free1x2Lg-InlineMed_f32933e6-bf9d-4595-bfcd-c26189423e70.png?v=1747272897"},{"product_id":"free-standing-12x18-pergola-kit-with-roof","title":"Freestanding 12x18 Pergola Kit with Roof","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"No roof (frame only)","offer_id":42226020778164,"sku":"Free12x18Sm","price":599.0,"currency_code":"USD","in_stock":true},{"title":"Straight inline 2x4 slats [+$288]","offer_id":42801269342388,"sku":"Free12x18Sm-24IBx24","price":887.0,"currency_code":"USD","in_stock":true},{"title":"2x4 rafters atop beams [+$384]","offer_id":42801269375156,"sku":"Free12x18Sm-24RBx24","price":983.0,"currency_code":"USD","in_stock":true},{"title":"Inline 4x4 posts [+$300]","offer_id":42801269407924,"sku":"Free12x18Sm-44IBx20","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Angled 2x4 slats [+$480]","offer_id":42801269440692,"sku":"Free12x18Sm-24IBx40","price":1079.0,"currency_code":"USD","in_stock":true},{"title":"Shade canopies [+$370]","offer_id":43198690328756,"sku":"Free12x18Sm-CPY812B-CPY1012B","price":969.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/products\/Free1x2Sm-InlineMed_e1623509-10f7-4cdd-993c-24b0949e1913.png?v=1747272544"},{"product_id":"12x18-pergola-attached-to-house-with-roof","title":"12' x 18' Pergola Attached to House with Roof","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"No roof (frame only)","offer_id":42225987813556,"sku":"Att12x18Lg","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Straight inline 2x6 slats [+$360]","offer_id":42806561243316,"sku":"Att12x18Lg-26IBx24","price":1259.0,"currency_code":"USD","in_stock":true},{"title":"2x6 rafters atop beams [+$552]","offer_id":42806561276084,"sku":"Att12x18Lg-26RBx24","price":1451.0,"currency_code":"USD","in_stock":true},{"title":"Inline 6x6 posts [+$252]","offer_id":42806561308852,"sku":"Att12x18Lg-66IBx12","price":1151.0,"currency_code":"USD","in_stock":true},{"title":"Angled 2x6 slats [+$540]","offer_id":42806561341620,"sku":"Att12x18Lg-26IBx36","price":1439.0,"currency_code":"USD","in_stock":true},{"title":"Shade canopies [+$370]","offer_id":43212378734772,"sku":"Att12x18Lg-CPY812B-CPY1012B","price":1269.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/products\/Att1x2Lg-InlineMed_4ab6f114-d96e-45c3-8c41-22cdb6eae8e2.png?v=1747272258"},{"product_id":"attached-12x18-pergola-with-roof-diy-hardware-kit","title":"Attached 12x18 Pergola Off House with Roof","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"No roof (frame only)","offer_id":42225956618420,"sku":"Att12x18Sm","price":499.0,"currency_code":"USD","in_stock":true},{"title":"Straight inline 2x4 slats [+$288]","offer_id":42806555410612,"sku":"Att12x18Sm-24IBx24","price":787.0,"currency_code":"USD","in_stock":true},{"title":"2x4 rafters atop beams [+$384]","offer_id":42806555443380,"sku":"Att12x18Sm-24RBx24","price":883.0,"currency_code":"USD","in_stock":true},{"title":"Inline 4x4 posts [+$300]","offer_id":42806555476148,"sku":"Att12x18Sm-44IBx20","price":799.0,"currency_code":"USD","in_stock":true},{"title":"Angled 2x4 slats [+$480]","offer_id":42806555508916,"sku":"Att12x18Sm-24IBx40","price":979.0,"currency_code":"USD","in_stock":true},{"title":"Shade canopies [+$370]","offer_id":43210280501428,"sku":"Att12x18Sm-CPY812B-CPY1012B","price":869.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/products\/Att1x2Sm-InlineMed_0a2ac8ed-289f-4ef8-a091-0b2801975a22.png?v=1772210375"},{"product_id":"stand-alone-12x18-pergola-with-canopy","title":"12 x 18 Pergola with Canopies","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"Default Title","offer_id":43033077809332,"sku":"Free12x18Sm-CPY812B-CPY1012B","price":959.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/files\/FreeDblSm-CPY1212Bx2-SideView_649f0896-e041-4d48-9581-ec76953e6beb.jpg?v=1747269971"},{"product_id":"12x18-covered-pergola-with-sun-shade","title":"12x18 Covered Pergola with Sun Shades","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"Default Title","offer_id":43051243831476,"sku":"Free12x18Lg-CPY812B-CPY1012B","price":1559.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/files\/FreeDblLg-CPY1212Bx2-SideView_cd090654-6d46-4df6-a77c-3e08b1ae4709.jpg?v=1747269889"},{"product_id":"wall-mounted-12x18-pergola-with-shade-cover","title":"12' x 18' Pergola with Shade Covers","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"Default Title","offer_id":43064237654196,"sku":"Att12x18Sm-CPY812B-CPY1012B","price":859.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/files\/Att1x2Sm-CPY1212Bx2-SideView_2aebd88f-02b2-44ad-83e1-e3f68a1b5bed.jpg?v=1747269810"},{"product_id":"attached-12-by-18-pergola-and-canopy","title":"12 by 18 Pergola and Canopy","description":"\u003c!----\u003e","brand":"Zen Pergolas","offers":[{"title":"Default Title","offer_id":43064748081332,"sku":"Att12x18Lg-CPY812B-CPY1012B","price":1259.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/1390\/8916\/files\/Att1x2Lg-CPY1212Bx2-SideView_2764f83b-cc8f-4479-95d5-f07c6e1e641a.jpg?v=1747269788"}],"url":"https:\/\/zenpergolas.com\/collections\/12x18-pergolas\/type_free-standing+roof-style_wood-slats.oembed","provider":"Zen Pergolas","version":"1.0","type":"link"}