When considering window installation, one important thing to be aware of is whether you need to conduct a block frame or a full frame installation. So, what’s the difference?

Block frame (box unit) installation involves replacing only the window’s existing sash and leaving the window frame intact. The vinyl box unit is 3 .” wide, making it ideal as an insert window that can be installed into the existing window frame. This economical option does not disturb the existing exterior and interior trims.

Full frame installation involves completely removing the existing window and replacing it with a new one. With this option you can easily change the function, performance and appearance of your entire window’s style.

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Box Frame Installation

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Full Frame Installation