RVGUARD RV Skylight Replacement 18" x 26" Clear Dome — Polycarbonate, UV-Blocking, Includes Screws

RVGUARD's 18" x 26" clear skylight is a direct replacement dome made from UV-blocking polycarbonate and includes the mounting screws for a straightforward swap.

If your RV’s factory skylight is cracked, cloudy, or leaking, this RVGUARD 18" x 26" clear skylight replacement offers a durable, high-clarity option designed to fit standard 14" x 22" roof openings. Built from impact-resistant polycarbonate with 0% UV transmission and long-term anti-aging performance, it restores daylight, protects interiors from UV damage, and reduces heat buildup. The package includes M4*25 screws so you can complete most installations without hunting for hardware.

Will this skylight fit my RV roof opening?

The outer dimensions of this skylight are 18" x 26" x 4", engineered to cover standard 14" x 22" roof cutouts common in many RVs and trailers. Because it is a universal fit model, it replaces many OEM domes, but you should measure your roof curb to confirm compatibility before purchase.

• Outer dimensions: 18" x 26" x 4"
• Designed for standard 14" x 22" openings
• Includes M4*25 mounting screws for installation
• Measure curb thickness and bolt pattern to verify fit

How durable and weather-resistant is the RVGUARD skylight?

This skylight is molded from premium polycarbonate, a material known for high tensile strength and superior impact resistance compared with standard acrylic domes. It’s built to resist hail, wind, and road debris while delivering years of clarity without yellowing or significant degradation.

• Polycarbonate construction for impact resistance
• Up to 10 years of anti-aging performance
• Weather-resistant against wind, rain, and hail
• Avoid acid-based adhesives that can damage the material

How much light and UV protection does the clear model provide?

The clear version transmits approximately 88% of visible light, maximizing daylight inside the RV for a bright, open feel. At the same time, the skylight blocks 100% of UV radiation, protecting upholstery and finishes from fading and helping reduce heat buildup from sun exposure.

• Light transmission: 88% for bright interior light
• UV protection: 0% UV transmission to prevent fading
• Helps lower interior heat from direct sun exposure
• Available in other tints if more privacy or shade is desired

What’s included and any installation notes?

The RVGUARD skylight ships with all necessary M4*25 screws to secure the dome to a compatible curb, simplifying replacements and upgrades. Installation is usually straightforward for someone comfortable with basic RV roof work, but always follow sealant and fastening best practices to maintain watertight performance.

• Included hardware: M4*25 screws
• Recommended: inspect and, if needed, replace the roof gasket or sealant
• Do not use acid-based adhesives on polycarbonate
• Check curb alignment and torque screws evenly to avoid stress

Who is this for? RVGUARD’s 18" x 26" clear skylight is ideal for RV owners, DIY repairers, and service shops replacing cloudy, cracked, or leaking domes with a long-lasting, high-clarity option. It suits anyone who wants maximum natural light, full UV protection, and a robust polycarbonate dome that comes ready to mount with included screws. If you need a different light transmission or tint, RVGUARD offers alternate color choices to match privacy and interior temperature preferences.