Product Description

Master Spas Trainer 21' Replacement Cover – 257" x 94" Two-Bi-Folds  or Sectionals

Protect your investment with a premium replacement swim spa cover designed for the Master Spas Trainer 21 swim spa. Built to provide reliable insulation and long-lasting durability, this cover helps maintain water temperature while protecting your spa from debris, harsh weather, and everyday exposure.

Our replacement swim spa covers include high-density tapered foam insulation designed to improve heat retention and reduce energy loss. Maintaining proper spa temperature helps reduce heating costs while improving overall efficiency.

The exterior is constructed from durable marine-grade vinyl and Atlantis Pro-Tex performance fabric, designed to withstand sun exposure, moisture, and extreme weather conditions. Reinforced stitching and hinge seals help ensure long-term durability.

Designed specifically for the Master Spas Trainer 21 swim spa, this cover provides dependable protection and insulation performance.




Product Features

✔ 4 mil standard vapour barrier to reduce moisture absorption and help prevent foam waterlogging

✔ 1.5 lb high-density polystyrene foam core for strong insulation and long-term structural support

✔ Adjustable locking straps that meet ASTM safety standards, including all required mounting hardware for easy installation

✔ Steam stoppers along the hinge to improve heat retention and reduce energy loss

✔ Optional upgrades available for enhanced insulation, durability, and overall performance

Warranty

At The Cover Brothers, we proudly stand behind the quality and craftsmanship of our products with a 4-year pro-rated warranty. This coverage protects against defects in materials and workmanship throughout the warranty period, giving you confidence in your investment.

While repairs are not complimentary, our pro-rated structure ensures fair, cost-effective solutions should an issue arise — supporting the long-term performance and value of your cover.

For complete details on coverage, terms, and conditions, please refer to our full warranty policy.

Shipping & Returns

All sales with The Cover Brothers are final, as each cover is custom-built to order and we do not accept returns. To ensure you receive the correct product for your needs, we strongly encourage reviewing all specifications and measurements carefully prior to purchase.

Our team is always available to assist with any pre-purchase questions to help guarantee the best possible fit and configuration for your spa. If you experience any concerns with your order, please contact our customer support team and we will be happy to assist you.

Master Spas Trainer 21 Swim Spa Replacement Cover | Premium Swim Spa Covers

Master Spas Trainer 21 Swim Spa Replacement Cover | Premium Swim Spa Covers

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Made in Canada
4 Year Prorated Warranty
  • Custom fit for Master Spas Trainer 21 Swim Spa (257"x94" replacement cover – available in three bi-folds or sectional configurations)
  • High-density foam insulation (1.5 lb density) for superior heat retention and improved energy efficiency
  • Available in marine-grade vinyl or Atlantis Pro-Tex performance fabric for long-lasting durability and weather resistance
  • Reinforced hinge seal for added strength and extended cover life
  • Heat-sealed vapor barriers to help prevent moisture absorption and foam saturation
  • Chemical-resistant liner for improved durability and protection against spa chemicals
  • Durable reinforced handles for easy lifting and cover removal
  • Adjustable locking safety straps that meet ASTM safety standards, including all required mounting hardware for easy installation
  • Optional upgrades available for enhanced durability, insulation, and customization 

Need a different shape/size?  customize cover here!

Have additional questions? 1-844-799-0071

1
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Our Upgraded Atlantis Colours
The Atlantis colours are 25% lighter more durable have added UV protection and extra mildew inhibitors and look really sharp!
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Cap Cover
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$569.99
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