During glass block basement window installation, we remove the entire frame—all the wood—rather than leaving some or all of the frame in place like some companies do to cut corners.
For instance, if a particular opening requires sixteen glass blocks instead of twelve glass blocks, we will properly remove the entire frame and install the larger window. The competition might quote you a lower price, but it is possible they are just driving nails or screws into the top of the frame and installing the smaller (cheaper) twelve-block window. Ultimately, the inferior and improper installation will cost you more.
For a sample of our assembly and installation differences from our competition, compare us to other options.