RVGUARD RV Skylight Replacement 18 x 26 Black Polycarbonate Dome — UV-Blocking, Impact-Resistant with Screws

RVGUARD's 18" x 26" black polycarbonate skylight is a direct-fit replacement for standard RV roof openings that blocks most light while providing full UV protection and comes with mounting screws.

Replace a cloudy, cracked, or leaking factory skylight with a durable, impact-resistant polycarbonate dome designed for RV use. This skylight measures 18 inches by 26 inches on the outer frame and fits typical 14" x 22" roof openings, making it a practical upgrade for many camper vans, travel trailers, and motorhomes. The black tint offers low light transmission for privacy and heat reduction, and each unit ships with the M4*25 screws needed for installation.

How will this skylight affect cabin temperature and light?

The black-tinted dome transmits approximately 10% of visible light, so it noticeably darkens interior brightness and reduces solar heat gain compared with clear domes. Because it blocks 100% of UV rays, it also protects upholstery and finishes from sun-driven fading. It’s a simple way to keep your living space cooler and more private without adding blinds.

• 10% visible light transmission for reduced glare and privacy
• 100% UV-blocking polycarbonate to limit fading
• Helps reduce interior heat buildup under direct sun

Will it fit my RV and what’s included for installation?

This skylight is built with an 18" x 26" outer frame designed to cover most standard 14" x 22" roof openings, making it a universal replacement for many RV models. RVGUARD supplies the necessary M4*25 screws so you won’t need to source hardware separately. Always verify roof cutout dimensions and avoid acid-based sealants during installation to preserve the material.

• Outer dimensions: 18" x 26" x 4" to match common openings
• Includes M4*25 mounting screws for straightforward installation
• Installation tip: avoid acid-based adhesives to prevent damage

How tough is the skylight against weather and impact?

Constructed from premium polycarbonate, this skylight delivers high tensile strength and strong impact resistance compared with standard acrylic domes. It’s engineered to stand up to hail, wind, and road vibration while maintaining clarity over time. The material is weather-resistant and formulated to resist yellowing and aging for years.

• Premium polycarbonate construction for improved impact resistance
• Weather-resistant formulation with up to a decade of anti-aging performance
• Maintains clarity and structural integrity under outdoor exposure

Is this skylight safe for UV-sensitive interiors and fabrics?

This RVGUARD skylight blocks 100% of UV rays, protecting interiors and belongings from UV-related fading and degradation. While it reduces UV exposure, it’s not a substitute for additional ventilation or airflow solutions. It complements interior shades or curtains for maximum protection and comfort.

• Zero percent UV transmission to protect upholstery and finishes
• Pairs well with interior coverings for enhanced protection
• Helps preserve interior materials by reducing UV damage

Who is this for? RVGUARD’s 18" x 26" black skylight is ideal for RV owners, remodelers, and DIY enthusiasts who want a robust replacement dome that improves privacy, reduces interior heat, and preserves cabin finishes. Choose this model if your roof opening matches standard dimensions, you prefer low light transmission, and you want a long-lasting polycarbonate option that comes ready with mounting screws for a straightforward swap-in.