HST Pro-Tex spa cover for Cal Spas – 93 x 93 in, black

Replace the cover on your compatible Cal Spas with this 93 x 93-inch black Pro-Tex HST cover. Its slope from 5 to 3 inches, full thermal seal, and welded 6 mil vapor barrier help retain heat between swims. This configuration has 8-inch-radius corners and a 5-inch overlapping skirt: compare these measurements with your current cover before ordering.

93 x 93 inches: choose based on your Cal Spas configuration

The Cal Spas brand includes several models and generations. This HST replacement cover must match the shape of your spa, not just its length and width. Also compare the 8-inch corner radius, 5-inch skirt, fold direction, and strap placement. The radius describes the curve of the corner: it does not represent a straight 8-inch cut.

A sloped, insulating construction from 5 to 3 inches

The slope encourages water to run off the surface. The full thermal seal and skirt with a center overlap help limit gaps through which heat can escape. The welded 6 mil vapor barrier protects the interior from moisture transfer. A properly fitted and closed cover helps retain heat; its maintenance and conditions of use affect its performance.

Black Pro-Tex and rubber handles

HST describes Pro-Tex as a solution-dyed polyester coated with polyurethane to protect the surface from water. The materials are UV-treated and mildew-resistant. The manufacturer states that the fabric is 25% lighter than vinyl; this comparison refers to the cover material, not the total weight of the spa cover. The two rubber handles provide a suitable grip for handling.

Features of this configuration

• Cover manufacturer: HST
• Application: Compatible Cal Spas models with the measurements specified
• SKU: HSTBCOUVERTCAL9393AB
• Dimensions: 93 x 93 in., approximately 236 x 236 cm
• Thickness: 5 in. at the center, tapering to 3 in. at the edges
• Corner radius: 8 in.
• Skirt: 5 in. with center overlap
• Covering: Pro-Tex Grade A
• Color: black
• Vapor barrier: 6 mil, welded
• Full thermal seal
• Two rubber handles
• Made in Canada

Prepare for replacement and check your cover lifter

Find the spa's model and year, then compare the current cover with the measurements on this product page. If you use a cover lifter, make sure it accommodates the new cover's shape, thickness, and fold. Provide photos of the spa, hinge, and straps to confirm your selection.

Installation and maintenance

Place the cover evenly over the rim and check that the straps are aligned. Gently release the seal before lifting by the handles; do not use the skirt as a handle. Clean regularly with a soft cloth, water, and mild soap. Carefully remove snow with a broom, not a shovel, and drain any standing water to preserve the cover's shape.

In the box

1 black HST spa cover in Pro-Tex, 93 x 93 in., in the configuration specified, with 2 rubber handles. The spa and cover lifter are sold separately.

Confirm your order with Piscine Hippocampe

Provide the model, year, and, if possible, serial number of your Cal Spas. Compare the 93 x 93 in. size, 8 in. corner radius, 5 in. skirt, fold direction, and straps with your current cover. Mention SKU HSTBCOUVERTCAL9393AB to confirm your selection.

Confirm the delivery or pickup arrangements for this oversized cover before ordering.