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The 70" x 83" Hot Tub Cover (Short-edge Fold) (SKU: 457187) is designed to fit your Master Spas® hot tub. This cover ensures extreme energy efficiency as it is 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 to help prevent heat loss. Additionally, it is made of a high end marine-grade vinyl covering that is mildew treated, and consists of upgraded rubber grip handles.

Note: This particular cover folds along the shortest 70-inch edge. For a hot tub cover folding on the long edge, please see 83" x 70" Hot Tub Cover (Long-edge Fold).

SpaBoss Prevent II is used to get rid of staining and scaling in your hot tub and prevents it from building up in the first place. This liquid is a concentrated and multi-purpose stain and scale treatment that is easy to add to any hot tub.

This replacement spa light bulb is one element to the lighting system and is specific to the 2012 Contractor Series models CS 360 and CS 415. Spa light bulbs help to bring a unique ambience to your home spa.

Measure the chemical balance of chlorine based water with AquaChek Chlorine 4-in-1 Test Strips in 15 seconds.

• Count: 50 test strips
• Tests for: Free Chlorine, pH, Total Alkalinity, Stabilizer (Cyanuric Acid)

Designed specifically for 2015 Michael Phelps Swim Spas this sensor is a replacement for the sensor in your spa’s heating system allowing you to control the heat of your spa from the external control panel. If you don’t see your model listed, it may still work – so please give our customer service a call!

Enjoy a therapeutic soak with the warm, soothing scent of Vanilla Spa Crystals. Simply add one scoop to complete your spa experience!

Quiet your anxiety and reduce stress with the calming, floral scent of Lavender Spa Crystals. Simply add one scoop to complete your spa experience!

Improve your mood and clear your mind with the cool, revitalizing scent of Eucalyptus Spa Crystals. Simply add a generous scoop to complete your spa experience!

Clear your mind and soak your tired, sore muscles with the sweet, relaxing scent of Jasmine Spa Crystals. Simply add one scoop to complete your spa experience!

The Ultralift with Undermount (SKU: 6132032) is a hassle-free cover lifter with an under-mount bracket that easily slides underneath your hot tub. One person can easily lift the hot tub cover on and off from outside or inside of your tub!

The 12-inch A&B M7 Temp/High Sensor is a replacement sensor for several Spa models including the Clarity, Down East, Contractor, Freedom, Getaway, H2X Swim Spas, Healthy Living Hot Spas, Legacy Whirlpool, Legend Series Master Spas, Michael Phelps Swim Spas and Twilight Series Spas. If you don’t see your model listed, it may still work – so please give our customer service a call!

General use 5/16 SS Washer from Master Spa Parts. This unit goes underneath fasteners on your spa/hot tub to keep components of your propulsion system intact.