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ADCO 3021 Polar White RV AC Cover for Duo-Therm Briskair 13.5K-15K BTU -- 34" x 29.5" x 14.75"

ADCO 3021 Polar White RV rooftop air conditioner cover for Duo-Therm and Briskair 13.5K-15K BTU units, 34 x 29.5 x 14.75 inches, jersey-backed vinyl with parachute drawcord
ADCO 3021 Polar White Duo-Therm/Briskair Air Conditioner Cover - 34" x 29.5" x 14.75"
 
List Price: $30.45
: $24.49
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Part Number: 3021
Manufacturer: ADCO

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ADCO Polar White 3-Year Warranty ADCO 3021 Rooftop AC Cover -- Duo-Therm and Briskair 13.5K-15K BTU

Keep your RV rooftop air conditioner protected during storage and off-season months. The ADCO 3021 cover is purpose-built to fit Duo-Therm and Briskair 13.5K and 15K BTU units, shielding the shroud from UV degradation, wind-blown debris, bird droppings, and moisture infiltration -- so it is ready to run when warm weather returns.

Heavy-Duty Protection for Your Rooftop AC Unit

Exposed rooftop AC shrouds crack and fade from UV exposure, collect leaves and nesting material, and allow cold drafts into the RV interior during winter storage. The ADCO 3021 addresses all three problems with a single, purpose-fitted cover that installs in minutes and stays put even in windy conditions.

ADCO has been manufacturing RV protective covers since 1979. The 3021 is part of their dedicated AC cover line, sized and shaped specifically for the Duo-Therm and Briskair shroud profile rather than relying on a generic one-size-fits-most design.

Jersey-Backed Vinyl Shell

Heavy-duty vinyl outer with a soft jersey fabric backing resists tearing and weathering while protecting the AC shroud surface from abrasion.

Parachute Drawcord Closure

Elastic parachute-style drawcord cinches snugly under the AC unit base to hold the cover firmly in place during highway travel and wind events.

Weatherproof Seams

Non-tearable, weatherproof seam construction prevents water intrusion at stress points -- the most common failure point on generic covers.

UV and Draft Protection

Blocks UV rays that bleach and crack AC shrouds, and seals out cold drafts that enter through the AC unit during winter storage.

Fitment: Which AC Units Does This Cover Fit?

This cover is designed specifically for the following Dometic (formerly Duo-Therm) and Briskair rooftop air conditioner models:

  • Duo-Therm / Briskair 13,500 BTU rooftop units
  • Duo-Therm / Briskair 15,000 BTU rooftop units
  • Duo-Therm model #57915
  • Duo-Therm AC135 (13,500 BTU class)
  • Duo-Therm AC150 (15,000 BTU class)
Sizing Note: The cover is sized at 34" L x 29.5" W x 14.75" D. Before ordering, measure your existing shroud footprint and height and compare against these dimensions. AC shroud profiles vary by production year -- if your unit is a post-2015 Dometic with a restyled shroud, confirm the profile matches before purchasing.

Installation and Storage Tips

Installation is straightforward and requires no tools. Pull the cover over the AC shroud from one end, center it, and cinch the parachute drawcord underneath the unit base. The cover can be installed by one person from the roof in most cases.

Maintenance Tips:
  • Rinse the cover with fresh water after removal each spring to wash away accumulated grit before storage.
  • Allow the cover to dry fully before folding for storage to prevent mildew on the jersey backing.
  • Inspect the drawcord elastic annually -- replace if it has lost significant tension after several seasons.
  • Do not run the air conditioner with the cover installed. Remove before powering the unit on.
Off-Season Storage and Seasonal Use: The ADCO 3021 is equally useful during winter storage, shoulder seasons when the AC is not in use, and during extended travel when road debris is a concern. The polar white color reflects heat, which reduces interior temperature buildup when the AC is idle in summer.

Warranty

ADCO backs the 3021 cover with a limited 3-year manufacturer warranty against defects in materials and workmanship. Retain your purchase receipt as proof of purchase for any warranty claim.

Product Specifications

ManufacturerADCO Products
Manufacturer Part #08-0603
SKU77-8619
UPC723111030215
ColorPolar White
Weight1.7 lbs.
WarrantyLimited 3-Year Manufacturer Warranty

Cover Dimensions

Length34 inches
Width29.5 inches
Depth (Height)14.75 inches

Materials and Construction

Outer MaterialHeavy-duty vinyl
BackingJersey fabric backing
SeamsNon-tearable, weatherproof
ClosureParachute-style elastic drawcord

Fitment Compatibility

Brand CompatibilityDuo-Therm, Briskair (Dometic family)
BTU Range13,500 BTU and 15,000 BTU rooftop units
Model NumbersDuo-Therm #57915, AC135, AC150

What Is Included

Included1x ADCO 3021 AC cover with integrated parachute drawcord
Not IncludedMounting hardware (none required), replacement drawcord
Important Information
  • Never operate the air conditioner with the cover installed. Remove the cover completely before powering on the AC unit. Running the unit with a cover in place will damage the cover and can damage the AC compressor or condenser.
  • Confirm your AC shroud dimensions match 34" L x 29.5" W x 14.75" D before ordering. Shroud profiles vary by production year and may not match even on BTU-equivalent units.
  • This cover is designed for storage and non-use periods. It is not an AC baffle, duct restrictor, or insulation product.
  • Inspect the rooftop and AC unit for damage before covering for winter storage. Covering a cracked or compromised shroud can trap moisture inside.


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