How To Measure for Horizontal Blinds

mini vinyl blindsThings to Remember:

Use a steel tape for accuracy.
Measure the exact width of the window at 3 different places. Use the narrowest
measurement and write it down.
Measure the exact length from top of window opening to bottom sill. Use the
shortest measurement and write it down
Make all measurements to the nearest 1/8 inch.
NOTE: All measurements should come from measuring the window. If you
measure your existing blinds, the measurements will be incorrect.
Do not take your own deductions. The factory will take necessary deductions and
Double check all measurements.
Blinds may be mounted inside or outside the window casing. See below for specific
Vertical Blinds require special measuring considerations which are outlined below.

Inside Mount (see diagram below)

The window covering will hang inside the window frame. We recommend an inside mount
whenever possible for a neater look. When you order, enter the exact dimensions of
your window without making any allowances. The factory will take all necessary
deductions for inside mounts.

Width: Width: Measure the EXACT distance across the
window from the inside edge of the frame to the opposite
inside edge in three places. Use the narrowest

Height: Measure the EXACT distance from the top inside
edge of the frame to the bottom inside edge of the frame
in three places. Use the longest dimension for
horizontal coverings and the shortest for vertical

Window Depth: The amount of space from the back of
the window or obstruction to the windows outer edge
(see below).

See the Sill Depth Chart below for the minimum sill
depth needed for installation and the minimum needed for
the product to be flush with the front.

Flush Mount

1.50" for 1" and 1/2" Mini Blinds, 3/8" Honeycomb Shades and Pleated Shades
2.25" for 1" Wood Blinds and 3/4" Honeycomb Shades
3.00" for 2" Aluminum Blinds and 2" Wood blinds
4.75" for Vertical Blinds

Outside Mount

The window covering will hang outside the actual window frame, over lapping the
window frame for maximum privacy and light blockage. Please note that blinds require a
flat surface for mounting. If you have a casement around your window, you may mount
the headrail directly on the casement, but not on the wall outside of it. In order to
make the width of the blind extend beyond the width of the casement, it is necessary
to mount the headrail above the casement.

  1. Width: Measure the desired width. To minimize light leakage the shade should overlap the window opening by at least 2" on each side and at the bottom.
  2. Height: Measure the distance from the top outside edge of the window frame the bottom outside edge of the frame. If there is not a window frame add at least 2"inches on the top and the bottom to minimize light leakage. The headrail on a wood or faux wood 2" blind is about 2 1/2" high.
  3. Leave room for the mounting brackets, which are about 2-1/2" tall
  4. For Vertical Blinds see our Vertical instructions