Patent ID: 7818927

Claim:
A method of forming a removable window insulator, comprising the steps of: providing at least four frame members; mitering each end of at least one of said at least four frame members; inserting a compressible seal between mitered ends of two substantially perpendicular frame members of said at least four frame members before securing said two substantially perpendicular frame members to each other; retaining said mitered ends of said two substantially perpendicular frame members adjacent to each other with a fastener, a head end of said fastener is disposed in one of said two substantially perpendicular frame members, the other end of said fastener is retained in the other one of said two substantially perpendicular frame members, rotation of said fastener in one direction increases a distance between said mitered ends of said two substantially perpendicular frame members, rotation of said fastener in an opposite direction decreases a distance between said mitered ends of said two substantially perpendicular frame members; sealing at least one pane to an inside edge perimeter of said at least four frame members; and applying a sealing strip to an outside edge of said at least four frame members.