MIRIS Building Supplies is an Authorized MI Window Dealer.  We stock a large inventory of MI Replacement and New Construction windows. If we do not have the exact size or style you are looking for in our warehouse we will be happy to custom order it for you.


All of our MI 1555 Series Replacement Windows come standard with Low-E glass, Dual-Pane insulation, Argon gas enhancement,  head and sill expanders,  2” foam wrap, and ½ screens. MI Windows also come standard with their signature Limited Lifetime Customer Assurance Warranty.