How to Measure Your Windows for Blinds

Measuring for window treatments is much easier than most people think. Here are five important things to remember. Please be sure to read the specific measuring instructions linked below before ordering. 1. Use a steel measuring tape.
2. Measure to the nearest eighth of an inch. Do not round your measurements. 3. On your notes, clearly indicate which measurement is the width and which is the height. It is very common to transpose measures. Please note width first, then height. If you order with the height first, A Better Blind will not be responsible. 4. Inside Mount Only – Do NOT take any deductions. Our factory takes those allowances. You need to provide us with your EXACT WINDOW SIZE OPENING, do not use the size of an existing blind in that window. 5. Outside Mount Only – You need to provide the exact overall blind size needed (by adding the necessary coverage to the width and height of opening). Our factory makes all outside mount blinds to the exact width and height you specify.
Note: These instructions are intended as guidelines only and may not apply in every situation. If you window application is unique or unclear, please call one of our experienced customer service representatives for assistance
Choose Inside or Outside Mount: Before taking any measurements, step back from your window and decide if you want to mount the window treatment inside the window recess or outside on the wall or molding. For an inside mount, the window opening must have enough unobstructed depth to allow mounting.

How to measure windows for blinds

 

Tip: For a flush inside mount (the blind completely recessed so that no part of the blind projects out of the opening) check that you have enough depth and make sure you request the valances be made the same width as blind since they are normally made an inch wider for IB and two inches wider for OB. Tip: We usually recommend an inside mount when possible because it provides a cleaner look. However, an outside mount can make a window appear larger or hide an unattractive window. When you specify inside mount, we will make a size deduction to allow for operating clearance. We will deduct up to 1/4″ from each side (on vertical blinds there is also a height deduction of 1/4″). The deductions are made so that the blind will not rub or scratch your window frame. If you specify an outside mount, we will not take any size deductions. Your blind will be made at the exact size you specify. So you must ADD to the opening measurement to allow for overlap and mounting brackets. Be sure to read our product specific measuring instructions before ordering.
Horizontal Blinds Inside Mount (IB): Measure the opening width at the top, center, and bottom recording the narrowest width. Measure the height left, center, and right recording the longest height. We will take all the proper width deductions to allow for operating clearance.
Outside Mount (OB): Measure the opening width. If there is room add at least 3 inches to each side of the window opening for a minimum light gap and maximum privacy. Add 2 inches in height to allow for mounting brackets above the opening and add your desired overlap for the bottom.
Vertical Blinds Inside Mount (IB): Measure the opening width at the top, center, and bottom recording the narrowest width. Measure the height left, center, and right recording the shortest height. We will take all the proper width deductions to allow for operating clearance.
Outside Mount (OB): Measure the opening width. If there is room add at least 4 inches to the width and length of the window opening for a minimum light gap and maximum privacy, unless it is a Sliding Glass