RVGUARD RV Skylight Replacement 18" x 26" Clear — Polycarbonate UV-Blocking with Screws Included

RVGUARD's 18" x 26" clear polycarbonate skylight replacement provides a universal, UV-blocking window for standard RV roof openings and arrives with the mounting screws required for installation.

Replace a worn, cracked, or yellowed RV dome with this clear skylight built to fit the common 14" x 22" roof cutout while using the 18" x 26" outer flange dimensions. Constructed from high-strength polycarbonate, the unit prioritizes long-term clarity, impact resistance and full UV protection to help preserve your RV interior. It ships ready with M4*25 screws so you can swap the old dome for a fresh, bright one without hunting for extra hardware.

How does this skylight fit my RV roof opening?

The RVGUARD skylight is designed with an 18" x 26" outer frame that secures over standard 14" x 22" roof openings used by many manufacturers. Its universal sizing simplifies replacement of most stock domes and is compatible with common mounting patterns. The included M4*25 screws match typical flange holes so you don't need special fasteners.

• Outer dimensions: 18" x 26" x 4" flange
• Intended for standard 14" x 22" roof cutouts
• Comes with M4*25 screws for immediate mounting
• Works as a direct swap for many factory skylights

What are the material and durability benefits?

This dome uses premium polycarbonate to deliver high impact resistance and tensile strength far above common plastics. The material resists cracking from road vibration or hail and is engineered to keep clarity over many seasons. RVGUARD also rates the dome for extended anti-aging performance to reduce yellowing and clouding.

• Premium polycarbonate construction for toughness
• Engineered to withstand wind, debris, and light impacts
• Extended clarity life to minimize yellowing
• Weather-resistant for long outdoor exposure

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

The clear model transmits roughly 88% of visible light to maximize daylight in your RV, making interiors feel brighter and more open. In addition to high light transmission, the skylight blocks 100% of UV rays to limit fabric and trim fading and to reduce heat buildup from UV exposure. You can also choose alternative tints if you prefer reduced brightness or more privacy.

• Approximately 88% visible light transmission
• 0% UV transmission for UV protection
• Option to select different color/tint levels for privacy or glare control

Are there any installation or maintenance cautions?

Installation is straightforward with the supplied screws, but avoid using acid-based adhesives or cleaners that can chemically react with polycarbonate. Use mild soap and water for cleaning, and inspect seals and fasteners periodically to maintain a watertight fit. If you plan to reseal, choose silicone or sealants recommended for polycarbonate and RV roofs.

• Includes M4*25 screws; no extra fasteners usually required
• Do not use acid-based adhesives or harsh solvents
• Clean with mild detergent and soft cloth to avoid scratches
• Check seals periodically and reseal with compatible sealant if needed

Who is this for? RVGUARD's 18" x 26" clear skylight suits RV owners, DIY repairers, and service shops needing a reliable, bright replacement for faded or damaged domes. It's ideal for travelers who want maximum daylight, fleet managers looking for durable roof components, and anyone replacing an older skylight with a long-lasting, UV-resistant polycarbonate unit that arrives with mounting screws for a faster install.