THE CONSTRUCTION OF THE COVER 

* Marine Grade Vinyl is used on the exterior of the cover

Vinyl Properties:
28oz expanded vinyl
Weatherometer (1500/hrs Minimum)
U.V. Resistant pigments(500/hrs Minimum)
100% Polyester Backing 
Antimicrobial treated (Mold & mildew)
-20 Deg. Cold Crack  
100% Virgin Vinyl
  
* The Inserts are     3" to 2" Sloped With R value of 12,    OR    4" to 2" Sloped R value of 16.  
*The Density is 2# per cubic ft. Wrapped and HEAT SEALED in a 4 Mil treated Plastic.Don't be Misled about Vapor seals!! WATER cannot pass through Plastic NO MATTER what the mill thickness is   All that a heavier mil plastic does is add weight to the cover
* The Inserts are supported with an  Aluminum "C" Channel for maximum support.

   Other company's use a   Galvanized C Channel. Here is what it looks like after a few years (click here)

* The two halves of the cover are hinged with a reinforced hinge for many years openings and closings. A heat seal tub is sewed in between the two halves to seal the gap
(Click here for a Close-Up View)

* The bottom of the cover is made of an open vinyl mesh: allowing moisture to drip back into the tub as well as letting the the cover breathe when it is off the tub.
* The handles and tie down straps are reinforced with nylon and sewed into the skirt for maximum strength.
*The Straps are 7" long and have a nickel plated grommet with a twist lock that mounts to the tub.
*Placement of the Handles and Tie down Straps are 36" Apart on the Ends parallel to the Hinge
* The Zippers are nylon and the zipper pulls are baked enamel to prevent rust and corrosion.
* We use a Polyester (size 92) Heavy weight Thread to prevent Deterioration from the Sun And Weather.
* The zippers are double stitched,and the entire cover has top stitching around the skirt.
(can be seen in the Close-Up View)
* The standard skirt is 2" from the bottom of the cover, Spilt at the corners to lay out easily .