Window Shades and Window Blinds - WindowBlindsandDesigns.com Newsletter

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Inside-mounted Horizontal Blinds

  1. Measure exact window width at top, middle, and bottom (round down to the nearest 1/8-inch).
  2. Use the narrowest width of the three measurements. Do not make any width deductions. The factory will make the necessary deductions for the headrail.
  3. Measure exact window height at left, middle, and right side (round up to the nearest 1/8-inch).
  4. Use longest height of the three measurements.

Outside-mounted Horizontal Blinds

  1. Measure exact width where the blind is to be placed.
  2. Add at least 3 inches for overlap (1-1/2" per side) for optimum light control.
  3. Measure exact height from proposed headrail location to the sill. If there is no sill, measure to where the blind is to reach.
  4. Add 1-1/2" to the height for optimum light control.

Inside-mounted Vertical Blinds

  1. Measure the exact distance between the inside surfaces of the window frame at the top, middle and bottom, and use the narrowest width (rounding up to the nearest 1/8-inch. The factory will automatically deduct 1/4-inch for clearance.
  2. Measure the height of the window from the top of the opening to the sill in 3 places. Use the smallest dimension for the blind height. The factory will automatically deduct 1/8-inch.

Outside-mounted Vertical Blinds

  1. To find your Outside Mount measurements, measure the exact width of the door or window.
  2. A minimum overlap of 4 inches on each side is recommended.
  3. Outside mount projection brackets (specified at the time of ordering) are recommended for patio doors with projecting handles.