Quick view Pemko 18/1A 9X72 Pemko 18/1A 9X72 Threshold Pemko 18/1A 9X72 Threshold The Pemko 18/1A 9X72 is a threshold. This version: 1/8 In. by 9 In. by 72 In., Mill Aluminum. About this threshold or door sealThresholds, door bottoms and seals close the... $603.23 $706.32 Add to Cart 1 2 3