Step 4: Install on an internal or external door.
Slide the flat middle part of the Double Draft Seal under the door with the elastic straps facing up and the tubes on either side of the door. Slide it slightly past the end of the door, then pull back to help the elastic strap “grab” the far end (hinged side) of the door. Lift the elastic straps and secure them into place on each side of the door. This will complete your installation.