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The 78" x 66" Hot Tub Cover (Long-edge Fold) is an exact Master Spa Factory OEM replacement. It is specifically designed to fit your Master Spas® hot tub. This cover is extremely energy efficient, as it's made of a 1.5-pound foam density, six-inch thick foam insulation (which tapers to 4-inches along the sides), and a full-length heat seal. It has been upgraded to include two rubber grip handles and is made of a high quality marine-grade vinyl covering that is mildew treated.

Note: This particular cover folds along the longer 78" edge. If you need a cover with these same dimensions (66" x 78") but that folds along the short edge, try our 66 × 78 Inch Hot Tub Cover (Short-edge fold).

SpaBoss Cal-Rise is the easiest way to increase calcium hardness levels in your hot tub water. Protect your spa or hot tub and the many working parts within the plumbing and heating system by keeping the water chemistry correctly balanced at all times.

12V Power Supply for amplifiers. This 12V High Power DC Power Supply from Mean Well Electronics is an excellent source for your amplifiers allowing you to continue to enjoy sounds as you lounge in your spa/hot tub.

Free shipping for items over $99 for customers in the contiguous 48 states !

Play and enjoy music from your smartphone or mp3 player while lounging in your spa. This package comes with 1 Magnadyne Aquavibe MD150 AM/FM LED USB Bluetooth marine stereo.

Free shipping for customers in the contiguous 48 US for products over $99 !

50/60Hz 12V DC Power Supply provides a regulated power source (up to 12V) to small appliances and devices with universal short-circuit protection. Designed and built to withstand the harsh conditions associated with use in spa and hot tub applications.

SpaBoss X-It makes it easy to switch sanitizers or to lower excessively high levels of chlorine or bromine in your spa or hot tub without having to drain and refill the whole thing.

The Deluxe Fusion Air Stereo plays music wirelessly via a Bluetooth enabled smartphone, USB or MP3 device (wired connection can also be made with stereo RCA inputs). Music is controlled directly via Bluetooth, USB device or with handheld remote control.

Free shipping for customers in the contiguous 48 states for items over $99 !

SpaBoss pH Minus is a granular product that lowers pH levels and total alkalinity in your hot tub. It’s easy to add by the ounce to quickly adjust the pH levels for a stable hot tub environment.

Spa Aqua Comb makes cleaning spa filters a breeze! Designed for shallow pleated cartridge filters, the Spa Aqua Comb is used in most spas and swim spas.

THE SIMPLE, YET VERSATILE, SPA PAD SOLUTION

The innovative SmartDeck patio system provides a perfect solution to the problem of establishing a flat and level spa surface. Each panel locks together allowing the creation of small or large decks if desired. Textured surface and black color add to the deck’s elegant appeal. The SmartDeck should be offered with every hot tub sale. Don’t give away your profits to the concrete guy!

SpaBoss Chlor-Aid (2 lb.) is the easy way to disinfect your hot tub water and keep it free from algae and bacteria that can lead to unwanted side effects. This granular chlorine product immediately disinfects water, keeping it clean and clear. Additionally, Chlor-Aid will not disturb the pH or alkalinity balance in your water. 

Water can be rough on speakers. The 6.5-inch 2-way marine speakers are ready to take on whatever your Master Spa Hot Tub Series will throw at it.

Customers will enjoy clarity of audio and can rest assured that these speakers will not be destroyed by sun or an the occasional accidental splash of water.