Measure the length in two locations: each side, and the width at three locations: top, middle and bottom. Order the narrowest width and height. Skylight shades are inside mounted shades which are contained within your skylight frame.

Aluminum Side Channels

Aluminum side channels are included which allow the shades to fit into window opening up to 1” wider than the shade itself by deciding which leg of the “L” shaped side channels should be used to face downward - see diagram below. Side channels are not required to support shades with lengths under 48”. Their main use is to take up differences in window and window well widths and to reduce light gaps. They may also be used at the top and bottom of the window. – supplied upon request.

The maximum width of a skylight shade is 60. You may fit more than one shade into a light shaft by putting two “L” shaped side rails back to back to form a “T" or installing a mullion made from wood to divide the skylight shaft into two, you will want to take final measurement after the mullion is installed to insure you order the correct size.

Stacking Heights Including Rails

All of the skylight shade fabrics accordion closed and take up a very small space in the window. Below are the stacking heights for various models.

All fabrics should be located at least 3” from the glass or plastic of the skylight window. This may be less with cellular light filtering fabric in sunrooms. The reason for this is to protect the glass from the high heat that is developed in the space between the shade and window.