The Air-Trap PLP Series is a positive pressure, low-profile waterless trap rated for systems operating from 0 to 40" WC. Its low-profile form factor is engineered for horizontal or near-horizontal installations where vertical clearance is at a premium — attic installs, ceiling-suspended units, and slab-mounted equipment. Like all Air-Trap products, it prevents air leakage, operates dry, and meets IMC Code Section M307.2.4.1. Patent: US10605480B1.
“These things work great. I just installed them on both my A/C units. No more clogged p-traps.”