{"product_id":"xmk-rv-outer-dome-skylight-18x26-for-14x22-opening-polycarbonate-uv-coated-impact-resistant","title":"XMK RV Outer Dome Skylight 18\"x26\" for 14\"x22\" Opening — Polycarbonate, UV‑Coated \u0026 Impact‑Resistant","description":"\u003cp\u003e\u003cstrong\u003eXMK's 18\" x 26\" outer dome is a durable polycarbonate replacement skylight designed to fit standard 14\" x 22\" RV openings and bring long-lasting daylight and weather protection to your camper.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis skylight replacement by XMK is an aftermarket outer dome built to cover most 14\" x 22\" roof openings found in trailers, motorhomes, fifth wheels and campers. Constructed from thicker polycarbonate with a UV protective coating, it balances light transmission with weather resistance and impact strength. The product ships with pre‑drilled mounting guidance, comes in multiple colors and sizes, and is intended for DIY roof repairs or upgrades.\u003c\/p\u003e\n\n\u003ch3\u003eWill this dome fit my RV opening?\u003c\/h3\u003e\n\u003cp\u003eYes — the XMK outer dome measures 18\" x 26\" overall and is shaped to cover a 14\" x 22\" interior flange opening. The wider roof flange gives room for a secure seal and helps the dome overlap the original cutout for stronger weather protection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOuter dimensions: 18\" x 26\" for roof overlap\u003c\/li\u003e\n  \u003cli\u003eInner coverage designed for 14\" x 22\" openings\u003c\/li\u003e\n  \u003cli\u003ePre‑drilled hole layout to guide mounting fasteners\u003c\/li\u003e\n  \u003cli\u003eFlange depth ~4\" for stable roof attachment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable is the XMK skylight in wind and sun?\u003c\/h3\u003e\n\u003cp\u003eThe dome is molded from thicker polycarbonate that resists impacts and high temperatures better than thin plastic. A dedicated UV coating protects the surface and reduces UV transmission, helping maintain interior materials and keeping the dome clearer over years of outdoor exposure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThicker polycarbonate material for impact resistance\u003c\/li\u003e\n  \u003cli\u003eUV protective coating to slow discoloration and degradation\u003c\/li\u003e\n  \u003cli\u003eEngineered flange area to stand up to wind uplift\u003c\/li\u003e\n  \u003cli\u003eRated for outdoor RV use in varied climates\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much light and heat will this skylight let into my RV?\u003c\/h3\u003e\n\u003cp\u003eXMK offers six color choices so you can select the balance of daylight and heat control you prefer. Clear and white domes maximize natural light, while smoke, tawny, black, and dark blue reduce direct sunlight and help filter solar heat without plunging interiors into darkness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClear\/white: brightest interior light, ideal for darker rigs\u003c\/li\u003e\n  \u003cli\u003eSmoke\/tawny\/black: reduces glare and filters heat\u003c\/li\u003e\n  \u003cli\u003eDark blue: preserves a sky view with moderate shading\u003c\/li\u003e\n  \u003cli\u003eColor selection allows thermal and visual control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation complicated — what tools and steps are needed?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for a basic DIYer; the dome is lighter than glass and includes pre‑drilled guidance for mounting. For a reliable weatherproof seal, use an RV‑grade skylight sealant and follow standard roof fastening practices. If you’re unsure, a roof technician can install it quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre‑drilled holes reduce layout time and drilling errors\u003c\/li\u003e\n  \u003cli\u003eUse RV skylight sealant to prevent leaks and drafts\u003c\/li\u003e\n  \u003cli\u003eLighter weight reduces risk during lifting and placement\u003c\/li\u003e\n  \u003cli\u003eProfessional install recommended for complex roof profiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: RV owners, renovators and repair shops looking for a robust outer dome to replace weathered or cracked skylight covers. It suits travelers who want more natural light without sacrificing weather protection, and DIYers seeking a relatively easy upgrade with multiple color options to match interior needs. Choose the correct inner opening size and color to optimize brightness and thermal comfort for your rig.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this dome fit a 14x22 skylight opening?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The outer dome measures 18x26 and is designed to cover and fit standard 14x22 interior openings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Should I use sealant when installing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Applying an RV-grade skylight sealant is recommended to prevent leaks and air infiltration.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"XMK","offers":[{"title":"Default Title","offer_id":48079893037214,"sku":"B0DNZ3YZBT","price":89.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/xmk-outer-dome-front-view.jpg?v=1785774719","url":"https:\/\/northtrailauto.ca\/products\/xmk-rv-outer-dome-skylight-18x26-for-14x22-opening-polycarbonate-uv-coated-impact-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}