Purpose-built for full-size Class A motorhomes, the UnitedCovers 5-Layer delivers multi-layer, all-season protection without trapping moisture against your paint. Reflective panels, zippered entry points, and a tool-free buckle system make this a serious long-term storage cover, not a seasonal tarp. Part number UC-CA-3337.
Class A motorhomes represent a significant investment. Leaving one exposed to UV radiation, acid rain, tree sap, bird droppings, and seasonal ice without proper coverage accelerates paint oxidation, promotes mildew growth inside vents and slides, and can void manufacturer finish warranties. The UnitedCovers 5-Layer is engineered specifically to address all of these failure modes in a single cover.
The cover ships in a manageable 25 lb package and installs without tools. The weighted buckle system pulls slack out of the fabric automatically, and elastic hems at the front and rear corners hold the cover tight even in gusty conditions. A slip-seam profile hugs your rig's roofline and body contours to reduce wind load and billowing.
Four polypropylene PLUS layers plus one micro-porous film layer block rain, UV, and ice while allowing trapped vapor to escape upward.
Two polypropylene PLUS layers and one micro-porous film layer protect sidewalls without building up condensation against the paint.
Heavy-duty zippered panels let you enter the motorhome, check connections, or access storage bays without removing the entire cover.
Reflective panels on the cover improve nighttime visibility for drivers passing a stored rig in a driveway, campsite, or storage yard.
The UnitedCovers 5-Layer is rated to protect against the full range of outdoor hazards that degrade Class A exteriors over time:
The UC-CA-3337 cover is sized to fit Class A motorhomes from 33 to 37 feet in length, with an overall cover dimension of 37.5 ft long x 8.92 ft wide x 10.08 ft tall. This generous sizing accommodates most standard Class A roof heights and slide-out profiles within that length range.
UnitedCovers uses double-line stitching at all panel junctions -- the stress points where covers typically fail first. This reinforced seaming extends the usable life of the cover significantly compared to single-stitch competitors. The gray color is not decorative: a light, reflective exterior reduces heat buildup under the cover in summer storage, which protects rubber seals, wiring, and interior materials from heat cycling damage.
You can wash the cover by hand or in a washing machine. For hand washing, install the cover on your RV, rinse it with a hose, then use a cloth and multi-purpose cleaner to scrub. Rinse again and either towel dry or let it air dry.
For machine washing, use the largest machine available, set it to gentle mode, and wash with mild powder detergent in cold water—avoid bleach and fabric softeners. Rinse the cover twice to remove all detergent, and always air dry.