Bumper Thresholds - Outswing Doors When closed, the door butts up to the vinyl bumper on these thresholds creating a high-dam barrier seal from the elements. Pemko 149_P Bumper Threshold Pemko 149_T Bumper Threshold Pemko 149_V Bumper Threshold Pemko 2051_P Bumper Threshold Pemko 2051_T Bumper Threshold Pemko 2051_V Bumper Threshold