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The Spa Dragon is a patented monitoring system with thermal backup protection that prevents freeze damage caused by equipment failure. Stay worry-free in winter, with real-time alerts and automatic heating activation—no matter where you are.

The 108" x 94" Master Spas® replacement hot tub cover (SKU: X454994) is designed to fit your Master Spas® hot tub. This OEM factory hot tub cover comes with a 1. lb foam density, upgraded rubber grip handles and long steam stopper cushions to help prevent heat loss and make it extremely energy efficient!

Note: This cover folds along its longest dimension. 

One of the things we love about the Swim Spa Eco Pur Filter is that is can reduce your chemical consumption by up to 75% while cleansing your spa or hot tub of harmful contaminants, bacteria, and microbes. Essentially, this mineral filter for Swim Spas is the filter that pays for itself!

This Eco Pur pure filter works with most Master Spa® H2X & Michael Phelps Swim Spas.

Looking for a macro flat filter for a Legend Series™ spa? Master Spa Parts has it in stock and ready to ship! Our Macro Flat Filter PMA50-2002-F product is compatible with select models of the Master Spas® Legend Series, ranging from 1996 through 2003.

Order a Macro Flat Filter Cartridge from Master Spa Parts and save!

Get the most out of your H2X® or Michael Phelps Signature swim spa by purchasing a high-quality Pleatco® replacement filter PWW50P3 to work alongside your H2X® Eco Filter. All Master Spa Parts orders are shipping out within 48 hours — order your H2X® swim spa filter cartridge replacement today!

Use these SilkBalance Gems to clean your spa once a week, in only 20 seconds. These easy to use single-dose pods neutralize odors, soften water, and protect your spa components. This product includes 16 gems per pack (16 oz. packs) It's like SilkBalance solution, yet easier!