Insulating a window pane

Insulating assembly for window openings

Insulating installation for a window frame

Insulating panel for thermal openings

Insulating storm window attachment

Insulating storm window attachment

Insulating system for attic stairs and the like

Insulating window insert

Insulating window system

Insulation window

Insulative window covering

Integrated window construction system for mounting both window s

Interior cover for an air conditioner mounted in a wall

Interior mounted window barriers and channel members therefor

Interior storm window

Interior storm window construction

Interior-mounted cover for roof ventilator

Interlocking storm shutter assembly

Light frame system

Light transmitting storm shutter system