These floor adaptors lock into the bottom of two ZipWall® 20 poles with just a twist, adapting them to simultaneously seal a dust barrier at the ceiling and the floor. To seal a barrier at the floor, place a FoamRail™ tapeless seal on the floor, take out the foot plug and snap an adaptor into the pole in its place. You may attach a second FoamRail™ tapeless seal to the top of the pole so seal at the ceiling. Raise the pole and set it in place to complete the seal. Work with all FoamRail™ tapeless seals