1. Safety
Comply ASTM F-1346-91

2. Insulation
Conduct ASTM C 518

The optional marine-grade vinyl covers features high-density, two-pound foam for maximum heat retention. The cover locks into place, forming a protective seal to keep heat in and weather out. The cover helps the spa water stay clean longer, reducing maintenance costs.

3. Durability
The Vinyl
. Good chemical solution resistance
. Abrasion resistance
Cold cracking resistance
. UV resistance
. Burn resistance  Conduct ASTM E-84
. Good mildew resistance: Conduct ASTM G 21 test

Moisture Barrier
??0.08mm thick

Foam
. High density expanded polystyrene foam
. Burn resistance: The foam did not support a flame not produce heavy smoke
. Water resistance
. Check for the presence of a galvanized steel U channel reinforcing the foam in each half of the cover

Reinforcement
A galvanized steel U channel reinforcing the foam in each half of the cover
A galvanized steel U channel thickness is 1 mm
The channel is molded into the foam

Zipper
The zipper material is nylon

Stitching
The thread is cotton wound polyester thread that is treated for UV and mold inhibitors; The stitching is double stitched and locked
The seams are 4-ply


We can make different shape and dimension spa cover products to meet your requirement. We would like to provide good quality products with best service to you