Measure the opening
Measure the rough opening or finished opening, not only the old window or door panel size.
Measurement guide
How to Measure for Custom Windows and Patio Doors
Use this guide to prepare clear opening sizes, photos, and project details before requesting a quotation. Final field measurement and installation should be confirmed by a local contractor.
Basic rules
Before you send sizes
Measure three points
Take width and height measurements at three positions and use the smallest size for discussion.
Send photos
Send inside and outside photos, including floor, wall, counter, frame, and surrounding structure.
Confirm locally
For installation, final site measurement should be checked by your contractor, installer, or builder.
By product
What to measure for each opening
Custom Aluminum Windows
- Opening width: top, middle, bottom
- Opening height: left, center, right
- Wall depth or frame depth
- Replacement or new construction
- Interior and exterior photos
Sliding or Bifold Patio Doors
- Full opening width and height
- Floor level and threshold condition
- Opening direction preference
- Panel quantity or layout idea
- Indoor-outdoor photos and destination city
Electric Pass Through Window
- Opening width and height
- Counter height and counter depth
- Wall thickness and top clearance
- Indoor or outdoor use
- Power outlet position and installation photos
Quote checklist
Send these details for a clearer quotation
Product type
Opening width and height
Quantity
Glass option
Frame color
Opening direction
Destination city or ZIP code
Photos or drawings
Important: We can support quotation and product configuration based on the information you send. Local building code, permit, final measurement, and installation should be confirmed by your local contractor or architect.