These blinds have withstood baseball size hail without damage to structure. The exterior of the blind has approximately 24ml of gelcoat and is smooth and slick. They're constructed basically in the same manner as a fiberglass boat hull. The interior of the blind is gelcoated also with approximately 24ml. It has three fiberglass fold down shelves under the windows.
All towers are fully welded construction.
The only assembly after delivery is to bolt the ladder which requires two bolts. The, shape and design came somewhat from our residential greenhouse units. The blinds are very easy to heat and on sunny days needs very little or no heat. You don't have to fight wasps or yellowjackets each Fall. Basically, these blinds are very comfortable and work well.