Made in the USA Strong commercial grade aluminum frame 8mm twin wall polycarbonate panels High side walls (58″) Newly redesigned HINGED DOUBLE DOORS with an opening of 71 inches tall x 48 inches wide Built in rain gutters Roof vents with auto openers 10 year Warranty on frame & panels Expandable in 4 increments Available in aluminum or black color frame Premium packages available (SAVE!) Snow Load: 24 lbs / sf. Wind Load: 113 mph gusts Easy Assembly – Manual included