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Replacing a cracked or discolored skylight garnish means you need a proper fit without guesswork. This inner garnish fits standard 18" x 30" cutouts and diffuses harsh light, giving your ceiling a finished look and softer light inside.
Finding a replacement that lines up with an existing cutout can stall a repair, especially when exact specs are unclear. This garnish is built for a 18" x 30" cutout with a 20-1/2" x 32" flange, so it aligns with common opening sizes and provides full interior coverage. You can focus on matching the opening instead of chasing exact model specs.
After removing a skylight, exposed foam and wood around the opening can leave the interior looking unfinished. This garnish installs on the inside to cover those rough edges and sits flush against the ceiling. The result is a clean, finished look instead of visible construction materials.
Interior trim that sits too high can interfere with the skylight above or reduce usable space. With an approximate 4" bubble height, this garnish is shaped to nest without contacting the skylight when measurements are verified. You keep the intended clearance without unwanted contact points.
Direct light through a skylight can create glare and uneven brightness inside. The white polycarbonate construction diffuses incoming light as it passes through the garnish. This creates a more even light spread instead of harsh direct exposure.
Missing hardware during installation can slow things down if you're not prepared. This garnish installs using 1" screws, which are not included, and some people add butyl tape (sold separately) inside the flange. That tape can help block water from getting inside, while others skip it so any skylight leak shows up right away instead of being hidden. Having your materials ready and knowing how you want to seal it avoids delays once you start.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com. Let's take a real quick look together at this Specialty Recreation White Inner Garnish for your RV skylight. Now, replacing your skylight should not be a regular job. This interior portion is made from UV-resistant polycarbonate, so this is built to resist sun damage and you for many years to come. This is gonna keep your RV protected from leaks and exposure. So, you're gonna use this in an 18-inch by 30-inch cutout, and this is sized with a 32-inch by 20 1/2-inch flange, and the rigid design is going to stay put, so you're not gonna have to worry about warping or lifting between screws after the installation.
This does not include any hardware, you're just going to get this inner garnish, so you will have to supply the screws to get this mounted into place. So, this is going to do a great job of softening harsh sunlight. The white polycarbonate's gonna diffuse the light for a comfortable interior. No need for modifications. Once this is installed, this flange is going to sit flush with the ceiling with about a a five-inch bubble height for extra headroom.
If you do decide to pick this up, we would love to hear back from you regarding your installation, and how you've enjoyed this and how it's working out for you, so you can share your experience with us by dropping a comment or leaving a review on this product page. We'd love to hear back from you. Well, that's gonna wrap up our look today. I do hope that it was helpful for you. Again, my name is Andy, thank you for joining me.
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Christopher H.
9/17/2026
Glad we were able to help Susan! Thanks for including the photo. Please let us know if you need anything else.