Direct replacement polycarbonate bubble skylight for RVs, travel trailers, and fifth wheels. Translucent white — maximum natural light. Outer dimensions 18"×18". Fits all standard 14"×14" rough openings. 4" bubble height. Impact-resistant. Made in the USA.
The ICON 01817 is the white (translucent white) version of the 18"×18" square skylight — a direct replacement for the most common square RV skylight opening, the standard 14"×14". Translucent white maximizes natural light transmission, making it the brightest tint option for this size and the right choice for bathrooms, closets, and interior spaces where full overhead daylight is preferred.
ICON polycarbonate domes are tested to outperform competitors in impact, UV, and weather exposure. The 18"×18" outer flange covers the 14"×14" opening with a 2" overlap on all sides. Made in the USA, backed by a 1-year limited warranty.
Translucent white passes maximum natural light — the brightest tint option for the standard 14"×14" square opening
Fits all standard 14"×14" rough openings — the most common square RV skylight size
Outperforms competitors in impact, UV, and weather exposure testing — built for rooftop conditions
ICON manufactures their skylight domes domestically — 1-year limited warranty
Do NOT use self-leveling lap sealant with this skylight. Self-leveling sealants (such as Dicor and similar products) contain chemicals that react with polycarbonate and can cause catastrophic cracking and failure of the dome. Use only a non-self-leveling sealant compatible with polycarbonate — such as butyl tape or a non-self-leveling lap sealant specifically rated for polycarbonate plastic. Sealant is required for installation and is not included with this skylight.
1. Rough Opening (Hole Size): Must be 14" L × 14" W 2. Outer Dimension (Flange Size): This skylight is 18" L × 18" W When replacing an existing skylight, also measure the outer flange of the old unit to ensure the new skylight covers any existing sealant marks on the roof.
• (1) ICON 01817 White Square Skylight NOT Included — Required for Installation: • Sealant (must be polycarbonate-compatible — do NOT use self-leveling lap sealant) • Mounting screws
Rough Opening Required: 14" L × 14" W hole in the roof. Sealant: Use a polycarbonate-compatible, non-self-leveling sealant or butyl tape. Self-leveling sealants will damage the polycarbonate dome. Replacing an Old Skylight: Remove all old sealant from around the roof opening before installing. Ensure the opening is clean, dry, and free of debris before seating the new skylight.
ICON 12116 — Same 18"×18" square in smoke tint ICON 01818 — Same 18"×18" square in clear tint All three share the same 18"×18" outer flange and fit the same 14"×14" rough opening.