The M-D Vinyl U-Shape RCA Slide-On Under Door Seal features vinyl fins to protect against draughts, moisture, dust and insects. Save energy by sealing the bottom of the door and preventing the heat or air conditioning from escaping. RCA products are easy to install as they do not require hardware and simply slide to the door. A compression fit secures the door seal to the bottom of the door. Cut to the desired length with a hacksaw before installation.