231" x 94" Swim Spa Cover for H2X Trainer 19 and MP Momentum
OEM 231" x 94" replacement cover for H2X Trainer 19 and Michael Phelps Momentum swim spas—features tapered foam, marine-grade vinyl, and locking hardware.
The 231" x 94" Master Spas® OEM swim spa replacement cover is built to fit H2X Trainer 19 and Michael Phelps Momentum swim spas. Designed for performance and durability, this factory-original cover features thick foam insulation that tapers from 6" in the center to 4" along the sides—helping retain heat and reduce energy loss.
With marine-grade vinyl, a reinforced bottom, and locking safety hardware, this replacement cover protects your spa from the elements while keeping it energy efficient and secure.
Highlights of the 231" x 94" replacement cover include:
- EPS Foam Cores with Taper – 6" thick insulation at the center tapers to 4" at the edges, with a 1.5 lb foam density to reduce moisture intrusion and prevent heat loss.
- Full-Length Heat Seal – Helps lock in heat along the fold; the outer vinyl scrim is chemically resistant and weighs 12 oz.
- Three-Panel Skirt Design – Surrounds the cover edge to block debris and enhance insulation.
- Upgraded Rubber Grip Handles – More durable and comfortable than standard handles for easier lifting and repositioning.
- Four Release/Lock Hardware Connections – Built-in locking straps keep your cover secure during rough weather.
- Galvanized Steel Brackets – Provide enhanced structural integrity and long-term strength.
- Reinforced Bottom Vinyl – The 11 oz mildew-treated weft is built to last, even in damp environments.
- Double-Stitched Seams – 27 reinforced stress points for years of reliable use.
- ASTM Compliant – Meets safety standards for spa covers.
- 18 Color Options – Available in a variety of colors to match your spa; see photo options above.
Be sure to check out our Spa Cover Warranty for full coverage details.

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