The Windjammer Foam Weather strip sealing gaskets retains its original shape year after year, providing an excellent door weather seal on both large and small gaps alike. Remains pliable from -40F and meets ASTM, BSI, DIN and ISO standards .The door weather seal doorstop is an easy to cut cellular Polyvinyl Chloride (PVC), which has become widely accepted as a substitute for wood, due to its superior performance characteristics: wont absorb water, rot, warp, or splinter which means less waste, and longer life. The tops are pre-cut for uniform fit, efficient installation and superior air sealing. Comes ready to install, and can be painted. The Windjammer Foam Weatherstripping is preferred by installers and inspectors in a nationwide survey. Nail up installation, no screws needed. Nails are not included. Color: White/White.