Steel windows are built to be mounted instantly into structural openings of wood, masonry, block, brick or structural steel. Normally, They can be connected to the structural opening by both fastening immediately throughout the window body, or by anchor straps furnished by the window company. @remodelista?utm resource=remodelista&utm medium=observe&utm campaign=instruments 94Remodelista https://www.amazon.com.au/gp/product/B0DDY2JRQ1