Direct replacement thermoformed polycarbonate rectangular skylight for 18"×30" roof openings. White — maximum natural light. 21-1/2"×33-1/2" outer flange. 5" bubble height. No metal flanges. Approved elastomeric sealant included. Interior garnish N1830D sold separately. Made in the USA.
The Specialty Recreation SL1830W is the white companion to the SL1830S — a large rectangular replacement skylight for RVs with 18"×30" roof openings. White tint passes maximum natural daylight, making it the right choice for living areas, dining spaces, and interior locations where full overhead light is preferred rather than filtered. At 8 lbs with a 21-1/2"×33-1/2" outer flange and a 5" bubble height, this is a substantial skylight delivering generous natural overhead light.
The matching interior ceiling garnish for this size is the N1830D (white ABS frame, clear bubble) — sold separately. Approved elastomeric sealant is included for the outer installation.
Maximum natural light transmission — fills larger RV living spaces with abundant overhead daylight
Larger rectangular opening for Class A motorhomes and big fifth wheels — same flange and bubble height as the smoke version
UV-resistant, impact-resistant construction — durable and long-lasting for rooftop use
Specialty Recreation manufactures their skylights domestically — sealant included, 1-year warranty
The approved elastomeric sealant included with this skylight is specifically compatible with polycarbonate. Do not substitute self-leveling lap sealants (such as Dicor or similar) — these contain chemicals that react with polycarbonate and can cause cracking and failure of the dome.
The Specialty Recreation Inc. product warranty covers defects in workmanship and materials for 1 year from the date of purchase. Warranty does not apply to damage caused by improper installation. Note: Some product listings reference a 90-day warranty term; Specialty Recreation's published warranty policy is 1 year.
• (1) SL1830W White Rectangle Skylight • (1) 10 oz tube of approved elastomeric sealant • Care instructions • Installation instructions NOT Included: • Interior garnish — order N1830D separately • Mounting screws/hardware
Verify both measurements before ordering: Rough Opening: 18" L × 30" W Outer Flange: 21-1/2" L × 33-1/2" W When replacing an existing skylight, also verify the outer flange of the old unit — the new flange must cover any sealant marks or weathered areas around the opening.
SL1830S — Same 18"×30" skylight in smoke black tint N1830D — White ABS frame / clear bubble inner garnish for 18"×30" openings SL2230W / SL2230S — 22"×30" in white and smoke (same 30" dimension, wider) For a complete installation, pair this outer dome with the N1830D interior garnish.