Head-to-head · Best Grill Covers

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch vs Weber 7139 Premium Grill Cover for Spirit 300 Series

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch and Weber 7139 Premium Grill Cover for Spirit 300 Series score essentially the same (4.5 vs 4.5). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Ranked #4 in Best Grill Covers

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch

4.5

1 sourceall derived$27.99as of Aug 1

True waterproofing, rather than the water-resistant treatments on the Classic Accessories Veranda and the Weber OEM lineup, is what UNICOOK's 58-inch Heavy Duty cover offers at a value price. Bob Vila singled it out as Best for Cold Weather because the vinyl coating stays flexible to 0 degrees Fahrenheit, where most PVC covers crack. Bulk is the trade-off: it is noticeably heavier and stiffer than the Weber polyester, which makes off-season folding awkward but also more durable in tropical-rain climates where the lighter polyester covers wick through after extended exposure.

Strengths

— Solution-dyed polyester with full PVC undercoating is genuinely waterproof rather than water-resistant
— Bob Vila tested it as the Best for Cold Weather pick because the fabric does not crack down to 0 degrees Fahrenheit
— Wide covered-mesh vents prevent the condensation and mildew buildup common to non-vented vinyl covers

Watch-outs

— Heavier and stiffer than a polyester-only cover; harder to fold for off-season storage
— Vinyl coating can develop a faint plasticky smell when first unboxed in hot sun
— No warranty period published by the manufacturer

$27.99 · Check Price on Amazon Full review →

Ranked #3 in Best Grill Covers

Weber 7139 Premium Grill Cover for Spirit 300 Series

4.5

1 source$78.36as of Aug 1

Weber currently ships the 7139 as the OEM cover for Spirit 300 series (pre-2025) and Spirit 400 four-burner grills. Own a current-model Weber Spirit and want a tailored sleeve that looks like it belongs on the grill rather than a baggy universal cover, and this is the one. Bob Vila's 2026 review highlights the same Weber Premium line as the pick for Spirit owners, and notes that the polyester construction with woven UV inhibitors holds up notably better than the rubberized fabric Weber used on its older Genesis-era covers (which AmazingRibs Pitmaster Club members repeatedly flagged for cracking after two seasons).

Strengths

— Tailored sleeve fit for Spirit 300 series and Spirit 400 4-burner means no flapping or wind catch
— 100% polyester construction stays pliable in subfreezing temperatures where vinyl covers crack
— UV inhibitors woven into the fabric resist fading visibly better than house-brand alternatives

Watch-outs

— Only fits Weber Spirit 300 and Spirit 400 four-burner; useless on Genesis or non-Weber grills
— Pricier than universal covers of similar fabric weight
— Some forum users report water pooling on the flat lid section in heavy rain

$78.36 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch

More fully waterproof than the Classic Accessories Veranda 73912 (PVC undercoating vs Gardelle laminate) but heavier and harder to fold. Less tailored than the Weber 7139 Premium for Spirit owners but fits a much wider range of grills and costs half as much. The right pick for shoppers who prioritize all-weather sealing over OEM-matched aesthetics.

Weber 7139 Premium Grill Cover for Spirit 300 Series

Tighter, more tailored fit than the universal Classic Accessories Veranda 73912 if you own a current-model Weber Spirit, but useless on any other brand. Better cold-weather performance than the UNICOOK Heavy Duty universal because polyester stays pliable below freezing while the UNICOOK's vinyl coating gets stiff. Three-year warranty is the longest of the five covers in this comparison.

Specs side-by-side

Spec	UNICOOK Heavy Duty Waterproof Barbecue Grill Cover 58-Inch	Weber 7139 Premium Grill Cover for Spirit 300 Series
Dimensions	58"W x 25"D x 44.5"H	52"W x 27"D x 42"H (out of carton)
Material	Solution-dyed polyester with PVC waterproof undercoating	100% polyester with UV inhibitors
Water Resistance	Fully waterproof PVC coating	Breathable, water-resistant treatment
Temperature Rating	Rated to 0 degrees Fahrenheit without cracking	Stays pliable in subfreezing temperatures
Features	Yes, wide covered mesh vents	Yes, fastening straps
Compatibility	—	Spirit 300 series (pre-2025) + Spirit 400 4-burner
Warranty	—	3-year limited

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