Design Concept: lightweight and easy to carry, closed-cell foam, absorbs heat and sound, greatly reducing the spread of heat and sound, but also block ultraviolet radiation, effectively maintain the balance of indoor temperature, warm in winter and cool in summer Wide Range of Uses: indoor and outdoor roofs, roofs, sunrooms, tin rooms, metal rooms, corrugated rooms, construction sites, etc., to solve the troubles of heat insulation in the house, very cold in winter, and very noisy Premium Quality: high-density foam material, strong ductility, not easy to break, strong texture, more wear-resistant, long service life Easy to Install: First clear the roof debris, measure the construction size, prepare tape measure, utility knife and other tools, then embed the foam closure piece perfectly into the same contour of the respective metal room, corrugated room Warm Note: There are have a ridge every 12 inches on center:Each pack comes with 20 outside R panel foam closure strips that are 3 feet in length .If you have any questions or concerns, please do not hesitate to tell us. We will do our This list is applicable to 20 R-Panel external foam seals. 35-1/2 inches wide and 1 inch deep. 12OCS sealing is flexible, with excellent strength and uniform compression. 12OCS panel sealing is also very light and easy to operate/install. 12OCS is resistant to high temperatures, and its configuration almost eliminates moisture absorption and steam transmission problems. No matter in the building base or eaves, rust is OK - no problem. 12OCS will not crack, shrink or dry like traditional sealing. Use 12OCS where chemical resistance is required.