XMK RV Skylight Replacement Bundle 18x26 Outer Flange for 14x22 Opening — Dual Polycarbonate Domes, UV-Coated, Sealant Included

XMK RV Skylight Replacement Bundle is a paired inner and outer polycarbonate dome kit designed to replace standard 14" x 22" RV skylight openings, improving light, insulation, and weather resistance.

This complete skylight set includes both outer and inner domes plus mounting screws and self-leveling lap sealant so you can replace a damaged or aged RV roof vent in one job. Each dome is molded from thicker polycarbonate with an anti-UV coating on the outer cover, creating a trapped-air barrier between the two shells to reduce heat transfer and protect the interior. The bundle fits common recreational vehicles, campers, food trucks, and travel trailers with standard 14" x 22" sunroof cutouts and a ceiling thickness greater than 4".

Will this skylight fit my RV's opening and ceiling thickness?

The bundle is engineered for standard 14" x 22" roof openings and requires a ceiling thickness greater than 4" to accommodate both flanges. The outer assembly measures 14" x 22" x 4" with a 26" x 18" outer flange; the inner dome is 14" x 22" x 4" with a 16" x 23 7/8" flange. If your existing opening or flange dimensions match those sizes, this kit is compatible.

• Designed for 14" x 22" roof openings
• Ceiling thickness must exceed 4" for proper fit
• Outer flange: 26" x 18"; inner flange: 16" x 23 7/8"

How durable and weather-resistant are these domes?

Both inner and outer domes are manufactured from thicker polycarbonate to improve impact resistance and longevity compared with thin aftermarket covers. The outer dome receives an anti-UV surface coating to limit UV penetration and slow discoloration, helping protect your RV interior and reducing material degradation over time. The kit also includes a tube of white self-leveling lap sealant to create a tight, weatherproof bond during installation.

• Thicker polycarbonate for added strength and impact resistance
• Anti-UV coated outer dome to reduce UV damage
• Included sealant for improved water- and air-tight installation

What comes with the XMK skylight bundle and how is it installed?

The package contains an outer skylight dome, an inner skylight dome, pre-drilled mounting flanges with screws, and a tube of white self-leveling lap sealant. Pre-drilled holes and reserved mounting space let you position fasteners to suit your roof, while the sealant helps prevent leaks and air drafts. Basic DIY skills and common tools are sufficient; many owners complete the swap without professional help.

• Outer and inner domes sized to fit standard openings
• Mounting screws included; pre-drilled holes for guided placement
• Self-leveling lap sealant supplied to help stop leaks

Which color option should I choose for light and heat control?

XMK offers three color finishes—smoke gray, white, and clear—so you can control light and solar heat inside your RV. Smoke gray filters harsh sunlight and reduces visible and UV heat while still admitting daylight. White allows more diffused, softer illumination, and clear maximizes natural light entry for the brightest interior.

• Smoke gray: reduces glare and heat while preserving daylight
• White: broad diffused light for softer interior illumination
• Clear: maximum natural light transmission

Who this is for: The XMK RV Skylight Replacement Bundle is intended for RV, camper, travel trailer, and food-truck owners who need a robust replacement for a 14" x 22" skylight opening. It suits DIYers who want a complete kit with sealant and hardware, and anyone wanting improved light, durability, and UV protection compared with thinner aftermarket covers. If you have a standard-sized opening and a ceiling thicker than 4", this bundle provides a practical, long-lasting upgrade.