Direct-fit replacement polycarbonate bubble skylight for travel trailers, fifth wheels, and RVs. Clear/translucent white. Outer dimensions 18"×18". Fits all standard 14"×14" rough openings. 4" bubble height. Impact-resistant. Made in the USA.
The ICON 01818 is a direct replacement polycarbonate square bubble skylight for RVs, travel trailers, and fifth wheels with standard 14"×14" rough openings. The clear (translucent white) tint maximizes light transmission — ideal for living areas, bathrooms, and hallways where you want the full benefit of natural daylight without tinting or color reduction.
At 18"×18" outer dimension with a 4" bubble height, the ICON 01818 drops into the same standard 14"×14" opening as the smoke version (ICON 12080), offering the same proven impact-resistant polycarbonate performance in a maximum-light clear finish. ICON polycarbonate domes are tested to outperform competitors in impact, UV, and weather exposure — a meaningful upgrade over aging original skylights that have yellowed or cracked.
Translucent white clear tint passes maximum natural light — no tint reduction, brightest interior illumination of any tint option
Fits all standard 14"×14" rough openings — the most common square RV skylight size
Outperforms competitors in impact, UV, and weather exposure testing — durable and long-lasting
ICON manufactures their skylight domes domestically — backed by a 1-year warranty
Skylight sealant is required for installation and is not included with this skylight. Do NOT use self-leveling lap sealant (such as Dicor or similar products). Self-leveling sealants 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 use with polycarbonate plastic.
ICON skylights are sized by two measurements — both must be verified before ordering: 1. Rough Opening (Hole Size): The actual hole cut in your roof. This skylight requires a 14" L × 14" W rough opening. 2. Outer Dimension (Flange Size): The total outside dimension of the skylight including the mounting flange. 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 the same area and any existing sealant marks on the roof.
• (1) ICON 01818 Clear Square Skylight Dome 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 around the flange perimeter. 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 12080 — Same 18"×18" square skylight in smoke tint (fits same 14"×14" opening) ICON also offers rectangular skylights in a range of sizes. Measure your rough opening and outer flange to find the correct replacement.