Storm door

[Becky]

A second door installed outside or inside a prime door creating an insulating air space. Included are sliding glass doors made of double glass or of insulating glass such as thermopane and sliding glass doors with glass or Plexiglas placed on either the outside or inside of the door to create an insulating air space. Not included are doors or sliding glass doors covered by plastic sheets or doors with storm window covering on just the glass portion of the door.