... .e. foundation support and strip brush. It's used on escalator skirt as one of the safety equipments. It greatly help ... prevent the stuff or shoestring from being clipped by the step of escalator or moving walk.For the single row of strip ... .Angles of foundation support: 6, 12, 30, 35 degrees, etc.Width of foundation support: 19.5, 20, 22, 30, 41, 47mm ...