Restore a clean, factory-finished look to your RV slide-out room with the Lippert 381407 polar white composite fascia trim strip. Designed to cover exposed edges, seams, and gaps along the slide-out box perimeter, this 4-foot trim piece delivers a tight, finished appearance that protects against road grime, moisture intrusion, and UV fading -- all in a lightweight profile that won't add meaningful weight to your rig.
Slide-out fascia trim takes a beating over time. Repeated extension and retraction cycles, road vibration, UV exposure, and seasonal temperature swings all contribute to cracking, yellowing, and separation. When that trim goes, the gap it leaves behind isn't just cosmetic -- it can allow water and debris to work their way into the slide-out frame or interior wall cavity.
The Lippert 381407 is a direct replacement trim strip sized at 4 feet, making it ideal for one side of a short slide-out room or for completing a repair on a longer run that needs a partial section replaced. The polar white composite material is color-matched to the bright white finish found on most Lippert slide-out systems and many OEM coach exteriors.
Color is matched to standard bright polar white used across Lippert slide-out systems and most major coach manufacturers, minimizing visible patchwork repairs.
Composite construction resists warping, cracking, and UV degradation better than raw ABS or vinyl alternatives -- holds its shape through temperature swings from below freezing to summer highway temps.
At just 0.09 lbs for a 4-foot section, this trim adds virtually no load to the slide-out structure or its drive mechanism.
Engineered to fit Lippert slide-out room frames commonly found in Class A motorhomes, fifth wheels, and travel trailers built from the mid-2000s through current model years.
Fascia trim on an RV slide-out room serves two purposes: it finishes the exposed edges of the slide box where it meets the coach sidewall, and it helps seal out wind noise, moisture, and insects when the room is retracted. This Lippert 381407 strip is typically applied to:
Lippert Components supplies slide-out systems to a wide range of coach manufacturers including Coachmen, Forest River, Keystone, Jayco, Thor, and many others. The 381407 trim strip is designed for the Lippert composite fascia system and is a direct form-fit replacement for worn sections on coaches originally built with this trim style.
If you are repairing an existing slide-out, match your current trim profile before ordering -- Lippert offers multiple fascia trim sizes and finishes depending on the slide-out model and production year. The 4-foot length suits partial panel repairs, one wall of a smaller room, or installation where full-length trim is cut to fit on-site.
Most Lippert fascia trim strips are secured with a combination of mechanical fasteners (self-tapping screws into the composite panel substrate) and butyl or lap-sealant tape along the top edge to prevent water infiltration. Always clean the substrate surface thoroughly before installing replacement trim, and seal any exposed fastener heads with a UV-stable lap sealant such as Dicor self-leveling or non-sag caulk.