XMK RV Skylight Replacement Bundle — 18" x 26" Outer Dome for 14" x 22" Opening, Dual-Dome Polycarbonate with UV Coating

XMK's RV Skylight Replacement Bundle is a complete inner-and-outer polycarbonate skylight set sized to replace standard 14" x 22" roof openings with an 18" x 26" outer flange, restoring light, insulation, and weather resistance to your RV.

This kit pairs an inner and outer dome manufactured from thick, impact-resistant polycarbonate and includes sealant and mounting screws for a straightforward swap. It’s designed to reduce heat transfer by creating an insulating air gap between the two domes, block damaging UV rays with a protective coating, and fit ceiling thicknesses greater than 4". Available in clear, smoke gray, or white, the bundle balances privacy, light transmission, and solar management for campers, trailers, food trucks, and other mobile living spaces.

How will this skylight bundle improve my RV’s interior comfort?

The dual-dome design traps air between inner and outer layers to slow unwanted heat exchange, so your RV holds temperature more steadily. The outer dome’s anti-UV coating reduces ultraviolet exposure that fades fabrics and raises cabin heat.

• Air gap between domes for passive insulation
• Anti-UV coating on outer dome to limit sun damage
• Three color options to control light and glare
• Thicker polycarbonate for better weather resilience

Will this fit my existing skylight opening and how precise are the dimensions?

This bundle is made specifically to replace skylights that use a standard 14" x 22" roof opening and works with ceiling stacks over 4" thick. The outer flange measures 26" x 18", while the inner flange fits 16" x 23 7/8", making alignment with most factory openings straightforward.

• Designed for 14" x 22" roof openings
• Outer dome overall: 14" x 22" x 4" with 26" x 18" flange
• Inner dome overall: 14" x 22" x 4" with 16" x 23 7/8" flange
• Requires ceiling thickness greater than 4" for proper seal

How simple is installation and what’s included in the kit?

The package is intended for DIY replacement: both domes have pre-drilled locations to guide mounting screw placement and the kit comes with fastening hardware. A tube of self-leveling white lap sealant is included to form a watertight barrier and prevent drafts when installed correctly.

• Pre-drilled mounting holes to speed alignment
• Mounting screws included for secure attachment
• Tube of self-leveling white lap sealant to stop leaks
• Installation guidance recommended for correct sealing

Which color option should I choose for my RV and why?

Pick based on the balance you want between daylight, privacy, and solar heat control. Clear maximizes natural light, white softens and diffuses daylight for an even interior glow, and smoke gray reduces glare and filters heat while still admitting light.

• Clear: highest light transmission for bright interiors
• White: diffused light, reduced hotspots for comfortable ambiance
• Smoke gray: cuts direct sunlight and reduces interior heat

Who is this for? The XMK RV Skylight Replacement Bundle suits RV owners, camper van converters, travel trailer and food-truck operators who need a durable, full replacement skylight set rather than a single lid. It’s aimed at people who want to restore or upgrade daylighting and weather protection in standard 14" x 22" openings while improving insulation and UV resistance. Contractors and DIY enthusiasts who prefer a ready-made pair—inner and outer domes with sealant and screws included—will find this bundle saves time and ensures compatibility.