Water-resistant & lightweight
AirLoc™ panels have no foam core to soak up water, so the cover weighs the same out of the box and years later: 35–40 lb, depending on size.
Learn about water resistance
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No foam core to waterlog, a light 35–40 lb. Fits square Catalina Spas models 77″–94″ across the top. $1,195 with free shipping, usually at your front door within 3–5 business days.
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3-year limited warranty · In 100+ hot tub showrooms
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12 Catalina Spas models
The AIRCAP 1™ fits twelve Catalina Spas hot tubs: five of the six in Catalina’s current range — every square shell in it — and seven older Catalina Classic models. Find your model below and click Buy Now to get the right size.
Every AIRCAP 1™ size is $1,195 with free shipping to all 50 states — usually arrives in 3–5 business days.
84" x 84"
AIRCAP Small
Model Fit DetailsBuy Now
Use our SureFit™ easy-measure guide to find the right AIRCAP 1™ cover for any square hot tub from 77″ to 94″.
Need help? Contact thrml. to confirm your fit before you order.
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What customers are saying
Awesome product, my kids don’t complain about the cover anymore…
Best $$ I ever spent!
What this company has created in terms of an original and revolutionary product is nothing short of amazing.
For a reasonable price, I can cover my spa with a top that won’t get musty.
Nice and lightweight
…set up was super easy and took about 15 min total.
Installation was a breeze and we love it already!
Great customer service still matters, and frankly, not enough companies deliver it anymore. This company does, and that deserves recognition.
Do not wait to buy one.
Thoughtfully engineered
Three practical reasons to rethink your next hot tub cover.
AirLoc™ panels have no foam core to soak up water, so the cover weighs the same out of the box and years later: 35–40 lb, depending on size.
Learn about water resistanceThe sealed AirLoc™ air core has nothing in it to absorb water, so its insulation stays consistent for the life of the cover.
See how AIRCAP insulatesThree ZipTech™ skirt depths come in the box, and a worn or damaged skirt can be replaced on its own, without replacing the whole cover.
See how ZipTech worksEvery detail matters
Fits or we make it right. Wrong size or changed your mind? Swap it or return it within 30 days of delivery. We send a prepaid return label and there’s no restocking fee. Covers must come back in like-new condition with all parts. Bought from an authorized retailer? That retailer’s return policy applies.
How the fit guarantee worksBacked by a three-year limited warranty against manufacturing defects.
Warranty detailsUse Spa Fitter™ or SureFit™, or contact us before you order and we will confirm your size.
Get fit helpThe Catalina Spas Nantucket, which measures about 93.5" x 93.5", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Berkshire, which measures about 92.5" x 92.5", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Hampton, which measures about 84" x 83.5", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Carlton, which measures about 83.5" x 83.5", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Armstrong, which measures about 80" x 80", takes the AIRCAP 1 X-Small, which fits square hot tubs measuring 80 to 82 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Raptor (Raptor Premium, Stealth Raptor), which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Saber (Saber Premium, Stealth Saber), which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas XL 26000, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas XL 22000, which measures about 92" x 92", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas XL 21000, which measures about 87" x 87", takes the AIRCAP 1 Medium, which fits square hot tubs measuring 86 to 88 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Neptune (Neptune Solo, Neptune Premium, Stealth Neptune), which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
The Catalina Spas Samoa (Samoa Solo, Samoa Premium, Stealth Samoa), which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
Catalina Spas, built by LPI, Inc. in Johnson City, Tennessee, lists six hot tubs on catalinaspas.com and five of them are square: the Nantucket, Berkshire, Hampton, Carlton and Armstrong. Our fitter also lists seven older models from Catalina’s Classic Collection. Here is how the 12 Catalina models in our fitter map to AIRCAP 1™ sizes:
Berkshire owners: measure across the top. LPI’s factory spec sheets print the Berkshire at 92" square (the sheets dated 2019 to 2023) and 92.5" square (the current sheet), so we list it in the X-Large. The product description on catalinaspas.com, and the drawing of the three-pump Berkshire III, print 91". So measure across the top of the cabinet: if yours comes to 91" or less, take the Large (89"–91"); otherwise take the X-Large — between sizes, always round up. The Nantucket takes the X-Large whichever figure you go by: LPI’s sheets before 2025 print it at 92", today’s at 93.5" and the Nantucket III drawing at 93.75". Pinnacle Spas sells the Berkshire shell as its Crest, which Pinnacle prints at 93.5" (measure it the same way), and the Nantucket shell as its Transcend.
Nantucket, Berkshire, Hampton and Carlton owners: check for Tuff Top brackets. LPI sells these four with an optional Tuff Top, a hard cover that mounts on hinge brackets fixed to the cabinet. If your tub has a Tuff Top, check that those brackets will clear the AIRCAP 1™ and its skirt before ordering, or remove them. A tub bought with a foam cover or no cover has no brackets.
Older Catalina Classic models. The Raptor, Saber, XL 26000, XL 22000, XL 21000, Neptune and Samoa come from Catalina’s Classic Collection, which Catalina listed until about 2019. Their sizes are printed on Catalina’s own model pages from 2012 and 2017 and in the Classic Collection pages of Catalina’s October 2018 brochure. The XL in these names is not a cover size: the XL 21000 is 87" square and takes the Medium, while the XL 22000 and XL 26000 take the X-Large. Catalina’s 2012–2013 pages printed the XL 22000 at 94" × 94" rather than 92"; either figure takes the X-Large. Where a model came in Solo and Premium versions, both are printed at the same size. Catalina’s 2012 Stealth Series pages print the Stealth Raptor and Stealth Saber at 93" × 93" and the Stealth Neptune and Stealth Samoa at 84" × 84", the same sizes as the later Premium versions. Catalina’s early-2000s site also tied the Samoa name to its CL 700, a tub whose shape we could not confirm, so measure an early-2000s Samoa before ordering. Catalina was based in Perris, California through at least 2013; its pages name LPI, Inc. of Johnson City, Tennessee from mid-2017.
Older Catalina models not in our fitter. Catalina’s old model pages print several more tubs with equal sides, but equal numbers do not prove a square shell, and we could not confirm their shape from an overhead photo or drawing. If yours is one of them, measure across the top before ordering. If it is square, the Coronado, CL1300, CL1400, Ottawa and XL 23000 (printed 92"–93") fall in the X-Large range; the Quebec, Montreal, CL 760 and XL 15000 (87") in the Medium range; the CL400, CL 700, CL 800, CL 900 and Oceanus (84") in the Small range; and the Daytona (81") in the X-Small range.
Catalina models the AIRCAP 1™ does not fit. The sixth model in today’s range, the Kennedy, is a 66.75" × 84" rectangle that no square cover will fit, and Catalina’s swim spas on catalinaswimspas.com are all 90" wide and 151" to 250" long. Among older models, the CL 300 and CL 360 are 76" × 76", under our 77" minimum; the Avalon is round; the Maxi (61" × 81"), CL 600 (89" × 121") and Theater Spa (88" × 149") are rectangles; and the XLZ26X TV spa, printed 89" × 90.5", is too far out of square for a square cover. The AIRCAP 1™ is built for square cabinets from 77 to 94 inches.
Dimensions for today’s models are taken from the Catalina product pages and LPI’s factory spec sheets, and for the Classic models from Catalina’s 2012 and 2017 model pages and its October 2018 brochure (checked October 2026). Cabinet sizes can change between model years, so measure your spa side to side across the top of the cabinet before ordering; the SureFit™ measuring guide walks through it in two measurements. If your measurement falls between two sizes, round up.
Your cover. Your way.
$1,195 with free shipping, usually at your front door within 3–5 business days.
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Available in over 120 authorized hot tub showrooms across 34 states.