What Are Standard Replacement Window Sizes?

Huge variety and spectrum of various window sizes, thicknesses and framing.

Those who have significant experience in remodeling know how important windows are. They also know that window size matters. 

The truth is that most homes don’t have standard sized windows for simple reasons – custom size windows are more appealing and more popular. Standard window sizes are usually between 18″ min to 48″ max in width and 18″ min to 36″ max in height, but you are less likely to meet these dimensions when it comes to replacement windows. 

Standard size windows can be found mainly for new construction applications. The reason is that when constructing a building, the window opening can be adjusted to fit an off the shelf , standard size window.

If you have difficulties finding a standard size replacement window, it is because they are not widely available. Replacement windows are designed to replace old windows that come in all shapes and sizes which do not follow specific  standards. Replacement windows are usually if not always made to order.

Benefits of Custom Windows

Unlike standard windows, custom windows allow you to express your uniqueness better. Everyone has their own style, and it can be easily seen in home decor and exterior. 

Custom windows provide:

  • Great aesthetics
  • Size accuracy
  • Easier installation 
  • More design options
  • Various frame options that easily match the rest of home

When looking to replace the windows in your home, don’t compromise with standard window options that don’t meet your home’s needs. Always go custom. This way, you will improve the aesthetics, energy efficiency, and value of your home.

Replacement windows are a serious investment that will save you money in the long run and keep your home warmer and dry. 

For more information on replacement windows and how it can save you money, please contact us today. 

Do you know which size replacement window you need? Use our web app to order the exact window you need!

Customize Windows

1 2 3 4 5 6 7

Your configuration

selected product


Call +1 (858) 220 1179
Viewed from OUTSIDE looking IN.
Not representation of manufactured products.

Select window type

Select window opening system

Select grid style

Select grid type

Select frame type

Select frame color

Select glass type

Select Glass Transparency

Select width and height

Width must be at least 10 Inches

Width must be no more than 72 Inches

Height must be at least 10 Inches

Height must be no more than 72 Inches

iPlease enter a valid window height and width

Quantity of Window

i Please select an option

Need a special Window? Order by phone.

Call us on (858) 220-1179 (10am - 5pm PST)

Have a question? Send us an email

Free Pickup From our showroom in San Diego

Online purchases are supplied by JELD-WEN

All windows are made out of Vinyl

Read our shipping & returns policy

  • 5 star rating Clear max was the best choice we could have made as we had to get or doors replaced and also... read more

    Roger P. 7/01/2021

    5 star rating Wonderful job done by this company as we needed some custom windows installed to our home along with some customer... read more

    Samantha M. 6/16/2021
  • 5 star rating Just love the experience with ClearMax, i looked for a fast shipping service and found them, submitted a order directly... read more

    Sapiri M. 6/15/2021

    5 star rating I reached out to ClearMax and spoke with Josh to get quotes to upgrade my windows at my rental property.... read more

    Johnny L. 5/03/2021
  • 5 star rating Needed to replace old 70s windows. Awesome to work with from start to finesh. Estimator came out, measured everything explained... read more

    Yahav C. 3/19/2021

    5 star rating MANY THANKS to Danielle, Josh, Samir (Sam), and the entire ClearMax team for taking a nightmare of a situation --... read more

    Leigh P. 2/26/2021
Leave a Reply