3.5 feet wide, 3.5 inches thick, 15 feet long, r value around 25 these have closed cell foam rigid insulation, these are structural panels, they are tongue and groove for easy install. i have a door and windows with all the metal trim to complete a building from these panels it would be 7and a half feet tall by 7 and a half feet wide by 15 feet long. Would make a great cooler or tiny home or insulated storage shed the possibilities are endless. Thanks for looking! Call or text