B Size: for Bridger #1.75, Victor and Duke #2, MB-450, and MB-550
A Size: for 1 1/2 Victor, Sleepy Creek, Blake and Lamb and Montgomery round pan traps.
Urethane foam pads that fit under your trap pans. Underalls prevent dirt and sand from getting under your trap pan ensuring nothing blocks the pan and dog from firing. Quick and easy to install. Eliminates the need for a pan cover.
