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Recommended RV Storage Cover For A 2021 Grand Design Momentum 376THS


I have a 2021 Momentum 376ths , 42.5 feet . What is the best cover to fit ? Is the cover waterproof ? How long will these covers last ?


Expert Reply:

The Best fit for your 2021 Grand Design Momentum 376THS is going to be the Adco Olefin HD All-Climate + Wind RV Cover for 5th Wheel Toy Hauler - Up to 43' Long - Gray # AD89ZR. The Olefin HD travel trailer cover works best for long-term storage in all climates. They are not waterproof because a waterproof cover would prevent moisture from escaping causing mildew, mold, and rust. Instead, ADCO makes their covers highly water-resistant so that water beads off. They also build vents into each cover to allow moisture to rapidly escape.

The top panel constructed of Olefin HD fabric blocks harmful UV rays that can cause cracking and fading, beads water on contact, prevents dirt and dust particles from reaching trailer surface, and eliminates black streaks and corrosion caused by air pollutants and rain.

The side panels are constructed of non-abrasive, triple-layer polypropylene that breathe to eliminate moisture build-up, mold, and mildew and feature zippered panels on the passenger's side to offer easy access to trailer interior.

Cinch ropes at front and rear of cover remove slack and reduce billowing while weighted straps with buckles secure cover under vehicle to prevent the cover from blowing off in the wind.

These covers typically last 5 years but depending on the harshness of your environment the cover could last the life of your trailer.

2021 Grand Design Momentum376THS
2021 Grand Design Momentum376THS
(click to enlarge)
expert reply by:
Kevin C

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