Good condition in 8 boxes, 5 primary boxes, 3 corner boxes. Non flammable. Thin profile installs right over drywall. 5 boxes of primary are 8 sq. ft. per box = 40 sq. ft. 3 boxes of Corner pieces 7.5 sq. ft. per box = 22.5 sq. ft. Total = 62.5 sq. ft. Read more.