Apparatus for mounting an environment controlling sheet

Apparatus for mounting an environment controlling barrier on a double sashed window frame comprising:

• four separate frame sections each of which has an elongated body having a pair of flanges disposed at right angles;
• a layer of base material completely covering the outer surface of one flange of each said frame section;
• a multiplicity of small hooks embedded in said base material along the full length thereof on each frame section;
• separate means for directly securing one frame section to the base of said window frame outside of but adjacent to the plane of the outermost sash and with the hooks facing inwardly;
• separate means for directly securing one said frame section at each side of said window frame in abutting relation with the frame section at the base and with the flange thereof having the hooks thereon facing inwardly and likewise lying adjacent to the plane of the outermost sash, and in abutting relation with the base material of the adjacent frame section;
• separate means for directly securing the fourth frame section across the window frame at the midpoint thereof in abutting relation with the tops of the frame sections secured to the sides and with the flange having the hooks thereon facing inwardly and likewise lying adjacent to the plane of the outermost sash, and in abutting relation with the base material of the adjacent frame sections;
• a flexible environment controlling barrier dimensioned to overlap said frame sections in said window frame;
• elongated strips of fibrous pile material affixed to each margin of said barrier;
• said pile material in interlocking engagement with said hooks and in abutting relation at the corners formed by said frame sections;
• and
• the lower edge of the outermost sash in abutting relation with the inner upper margin of said barrier.