MMI Door Fiberglass Patio Doors are built to last and can add substantial curb appeal to your home. This fiberglass smooth patio door unit comes with our MSystem 2 Warranty on the Door Component and the Base Prehung System as well as a 10-year warranty on the Glass Lite. All of our fiberglass smooth patio doors are virtually maintenance free and will not warp, rot, dent or split. Our prehung door unit (called the MSystem) seals out the weather and practically eliminates air and water infiltration all together. Door size is 60 in. x 80 in. Unit dimension is 63 in. x 81.75 in. The suggested rough opening is 63.5 in. x 82.25 in. This unit comes with a 4-9/16 in. wide primed composite frame.
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