hldoor Simple Plate Supported by the Edges of the Sash 118 hldoor Simple Plate Supported by Beveled Plastic Strips Cemented to the Glass Itself 120 hldoor Simple Plate Affixed to the Glass by Magnets 120 hldoor Folding Shutter That Is Installed Symmetrically 121 14 INDOOR OPAQUE SHUTTERS THA T SLIDE 122 hldoor Plate That Slides (Without the Aid of Rollers) in Horizontal Channels 123 hldoor Plate That Slides (With the Aid of Rollers) in Horizontal Channels 123 hldoor Plate That Slides in Vertical Channels 124 hldoor Quilt That Slides Over the Top of a Trombe Wall 124 hldoor Train of Insulating Boards That Slides Over the Top of a Trombe Wall (Insulider Shutter) 125 15 INDOOR OPAQUE.SHUTTERS HINGED AT smE 126 How to Attach Hinges to a Plate of Rigid Foam 127 hldoor Two-Plate Shutter for Deeply Recessed Window: The Two Plates Are Held at the Sides by Hinges That Are Close to the Glazing 127 hldoor Automatic Two-Plate Shutter for Deeply Recessed Window: The Two Plates Are Attached by Vertical Pivots One Foot North of the Glazing (Levine Shutter) 128 hldoor Two-Plate Shutter Employing Thermoply (SUN SA VER Shutter) 130 hldoor Two-Plate Shutter Employing Rigid Foam Core 131 hldoor Shutter Employing Two Pairs of Hinged Folding Plates for Deeply Recessed Window 131 hldoor Shutter Employing Two Pairs of Hinged Folding Plates for Window That Is Only Slightly Recessed 132 16 INDOOR OP AQUE SHUTTERS HINGED AT TOP 134 How to Insure That a Shutter That Is Attached by Hinges at the Top Will Close Tightly Automatically 135 hldoor Single Lightweight Plate Hinged at Top and Held Open by Hook Near Ceiling 135