XMK RV Skylight Inner Dome 14" x 22" 4" Height — Clear Window, Thick ABS Replacement Trim

The XMK RV Skylight Inner Dome is a direct-fit 14" x 22" replacement inner garnish with a clear window, available in 2.9" or 4" heights for standard RV, camper, or food-truck skylight openings.

If your RV's interior skylight trim is cracked, yellowed, or no longer insulating, this XMK inner dome restores a clean look while letting natural light pass into the cabin. Built from thicker ABS plastic with an integrated clear pane, it resists impacts, heat, and common chemicals used during routine cleaning. The unit ships ready to mount with pre-drilled holes and screws and fits the commonly used 14" x 22" rough opening — measure ceiling thickness before choosing the 2.9" or 4" height.

Which rough opening does this inner dome fit?

The XMK inner dome is designed specifically for the standard 14" x 22" skylight interior opening. The dome dimension matches that rough opening while the outer flange provides coverage and mounting surface to seal and finish the ceiling cutout. Always confirm the existing skylight's rough opening and flange clearance before purchase.

• Dome dimension: 14" x 22" to match standard cutouts
• Outer flange measures approximately 23.6" x 16" x 4"
• Two height options: 2.9" (shallow ceilings) or 4" (thicker roofs/insulation)
• Designed for RVs, campers, food trucks, and shower/bath areas

How durable is the XMK replacement inner dome?

Manufactured from robust ABS plastic, this inner dome offers higher impact resistance than thin trims and withstands elevated interior temperatures. The clear window is engineered to handle normal cleaning chemicals without degrading, keeping the skylight looking clear and functional for years.

• Thicker ABS construction for improved toughness
• Clear window resists yellowing and common cleaning agents
• Good high-temperature tolerance for vehicle interiors
• Impact-resistant design suitable for mobile use

Is installation straightforward for an RV owner?

Yes — the XMK inner dome includes pre-drilled holes and mounting screws, with reserved space for optional drilling to match your specific frame or sealing method. Typical DIY installation requires only basic hand tools and a small bead of sealant if you want extra weatherproofing around the flange.

• Comes with pre-drilled mounting holes and screws included
• Reserved areas allow additional drilling to fit custom frames
• Simple removal of the old garnish and screw-in installation
• Optional sealant recommended for exterior weather protection

What benefits does replacing the inner dome provide?

Replacing a worn inner dome restores a neat interior finish, improves daylighting, and helps to trap a layer of air that reduces direct heat transfer. It's an inexpensive refresh that can make the RV cabin feel brighter and less aged without replacing the entire skylight assembly.

• Refreshes interior appearance and hides ceiling damage
• Allows natural light while maintaining a finished trim look
• Entrapped air helps moderate heat transfer through the skylight
• Cost-effective alternative to full skylight replacement

Who this is for: RV owners, camper renovators, and food-truck operators who need a direct replacement inner dome for a 14" x 22" skylight opening. Choose the 2.9" height for thin ceilings or 4" for thicker roof assemblies, and order when you want a durable, easy-to-install trim that improves light and appearance without a full skylight overhaul.