(A) - This picture shows the skirting externally mounted to lift table. With this type of mounting the skirt extends past the outside dimensions of the lift. This is the most common type of mount.

(B) - This pictures shows the skirting internally mounted to lift table. With this type of mount the skirt does not extend past the outside of lift.  This is ideal when pit mounting lift.  Note - this method can only be used if the skirt does not interfer with lifting mechanism.