How to replace old basement window with pre-built glass block. Basement Window Replacement. 33”x16”

Correction! The air chisels used are tool-shop brand sourced from a local Menards box store. Replacing an old steel frame window with a new prefabricated glass block window. Rough opening requested by manufacturer was 32x16. However ares was more like 33-1/2 wide! Use a type s mortar to fill around window for a good bond.