How do I measure for an inside mount?

Measure the inside width at the top, middle, and bottom, then use the narrowest width. Measure the height at the left, center, and right, then use the tallest height. Confirm your window depth meets the product’s minimum requirement.

How do I measure for an outside mount?

Decide on the desired coverage beyond the opening. Add at least 2 to 3 inches to each side for width and 2 to 3 inches above and below for height. Check for obstructions that might block the brackets or cassette.

What is the minimum depth required for a flush mount?

Minimum depth varies by product and cassette size. Refer to your product manual for the exact depth needed for standard and fully recessed flush mounts.

Which tools do I need to measure and install?

A steel tape measure, pencil, level, drill or driver, step stool, and the correct screws and anchors. A stud finder and masking tape can improve accuracy.

Where can I download 3 Day Blinds product installation manuals?

Scroll through the product list on this page and click the link to download the matching 3 Day Blinds installation manual. Each manual includes step-by-step instructions, depth requirements, bracket placement diagrams, and safety guidelines.

Can I get professional measuring and installation from 3 Day Blinds?

Yes. Our design consultants provide free in-home consultations with professional measuring. Professional installation is available in most areas. Call 833-591-1978 or schedule an appointment online.

How to Measure Window Treatments & Install

Installing and Operating Your Window Coverings

3 Day Blinds offers Product Manuals on window treatments for the do-it-yourselfer. The Product Manuals below include required tools and detailed steps to install a variety of blinds and shades.

For information on how to install, remove and operate your new window covering, please locate below the type of product you purchased and then click to download the specific Product Manual.

Not seeing your window treatment on the list - follow the link to look at some of our previous product guides.

Not sure where to start? Skip the measuring tape and let a design consultant handle it. Book a Free In-Home Consultation. Prefer professional installation? Call 877-712-3329.

Vertical Blinds

Need to measure first? See our step-by-step guide on how to measure for vertical blinds before you order.

Wood Blinds

2" - 2 1/2" Wood Blinds

Wood Arch

Keystone

Woven Wood Shades

Corded, Continuous Cord Loop or Upended

Window Measuring Guides

To ensure that the product you order fits correctly, we recommend you make an appointment for a FREE in-home consultation. However, we do have some tips if you want to do it yourself. Professional installation is also available in most areas, call 877-712-3329.

Measuring Guides

How to Measure

Quick Reference Measuring Guide

Window Measurement Worksheet

How to Measure for Vertical Blinds — a dedicated guide for vertical blind measurements (inside and outside mount).

Caring for Your Window Treatments

Once your blinds or shades are installed, a little routine care goes a long way. For product-specific dusting, vacuuming, and spot-cleaning instructions, see our full guide on how to clean window treatments.

Still have questions about installation or measuring?

Our design consultants will measure, recommend, and install — all included with your free in-home consultation. Or call 877-712-3329.

About the Author

Nigel Harris

Content Writer

Nigel Harris is a content writer with over 10 years of experience and a 3 Day Blinds Marketing Manager. His work on the marketing team has helped him develop a knowledge window treatments that helps customers better understand products. When he’s not writing, Nigel enjoys music, gardening, and traveling.

Follow me