What is a 40x40 window?

A window with 40x40 size (3'4" x 3'4") is a pre-designed standard sized window, which stands for 40 inches wide and 40 inches high for rough opening and the window size is 1/4 or 1/2 smaller than the rough opening, that the real dimension should be 39.75x39.75 or 39.5x39.5 for the real window size. Windows of 40x40 are commonly seen standard size windows, which fit most of the openings. Standard sized windows are usually cheaper than customized windows, as suppliers could be easier to manufacture and store.

China WDMA 40x40 Window Dimension Table

Name Compatible R.O. Width R.O. Height Real Window Width Real Window Height Application In Stock at Store?
40x40 Window 3434 Window 3'4" 3'4" 39.75 or 39.5 inches 39.75 or 39.5 inches New Construction / Remodeling / Replacement Yes
40x39.5 Window 39.5x40 Window 3'4" 3'4" 39.5 or 39.25 inches 39.5 or 39.25 inches Living Room / Kitchen / Bedroom Yes
40x39 Window 39x40 Window 3'4" 3'4" 39.75 or 39.5 | 38.75 or 38.5 (inches) 38.75 or 38.5 | 39.75 or 39.5 inches Picture / Single(Double) Hung / Casement Yes

What size is a 3434 window?

A 3434 window does exactly mean 40x40 window, that is 3-feet 4-inches wide by 3-foot 4-inches tall. Looking for a 3x3 window?

Can I buy a 40x40 window sash for replacement only?

No. We sell whole window system including sash and frame.

Introduce our 40x40 aluminum window factory below.

Custom your 40x40 windows: Standard Systems or Made to Measure and Custom Grille Designs.

We have a wide selection of standard-sized windows, including 40x40 replacement windows and difficult to find sizes in stock. In additon to a standard system sized of 40x40, we accept custom dimensions and grilles according to your house requirements. Contact us before placing an order.

Want 40x40 frame only?

Yes, you can order 40x40 window frame only without glass. And you can buy 40x40 window glass only from us. You need to install glass yourself on your instruction site.

Performance Glass of Dual and Triple Glaze Options:

Energy efficient dual glazed Low-E tempered glass is standard on all wdma window systems for better performance and to keep a low U-value.

How much is a 40x40 window?

China WDMA tries to provide the most cost efficient pricing to our clients as we have cooperate with over 20 different scales of factories and we provide the Best Price Guarantee to you.
A 40x40 window equals to 1.03232 square meters.

  • For thermal break aluminum window, the basic price ranges goes from $72.5 to $325 per square meter. So a 40x40 aluminium window prices from $74.8432 to $335.504 USD.
  • For wood window, it goes from $ 195.5 to $ 585 per square meter. So a 40x40 wood window prices from $201.81856 to $603.9072 USD.
  • For vinyl window, it starts from $ 60 to $ 289 per square meter. So a 40x40 vinyl window prices from $61.9392 to $298.34048 USD.
  • However, the final pricing depends on the specification on window frame, glass and hardware options and others. To caculate your own price, please Request a Free Quote.

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