ak trading co. 3" h x 24" w x 72"l upholstery foam cushion certipur-us certified. (seat replacement, upholstery sheet, foam padding) ak trading co. high density foam has a compression rate of 36 lbs. this means for every 36 lbs. on a general idea, your foam will compress by 25%. high density foam is designed for that sink in effect for those who love to fall into a nice soft cushion. 100% recovery rate fire retardant durability : durable, medium density foam suitable for long-term use. <br /><br /> our large foam sheets are ideal for a number of projects, such as: <ul> <li>seat replacement</li> <li>chair or sofa cushion upholstery</li> <li>fixing or replacing bench pads and furniture</li> <li>boat seats upholstery</li> <li>upholstered headboards</li> <li>car & other automobiles seat repair</li> <li>home and commercial applications</li> <li>diy projects, arts & crafts</li></li> medical equipments (wheel chairs and walkers)</li></li> </ul></li> </ul></li> </ul>warnings: foam packages need to be opened immediately upon arrival. do not let foam sit unopened for more than 1 week. don’t open with a box cutter (you’ll cut the foam). use a ball point pen or keys. </li> </ul></li> </ul> when unpacking foam, allow the foam to sit for 3 to 5 days so foam can breathe and return to its original size and form.