2fold Doors

2Fold Doors was originally named Two-Fold, LLC and was formed to sell the 2Fold® product line to consumers, architects, builders developers and resellers throughout the US. The first product to market was the movable window wall or bi-folding door system. 2Fold Doors is now a trade style of Mullionz LLC, the company that engineered the system. Over the last 2 years, 2Fold® has expanded to be a full-function steel window & door manufacture complete with in-swing and out-swing single and French doors as well as casement, awning and hopper windows. The line was completed with a mullion and fixed window group to supply the largest of fenestration openings. 2fold® is unique in that it is a hybrid profile system which utilizes fully welded steel sash frames for strength and Accoya® wood for superior thermal properties and unequaled aesthetic appeal on the inside. It is a hot-rolled steel window/door system by nature with its sashes having only a 1" wide face profile. A patent is pending on both this hybrid profile design and the 2.1 locking system that allows for fully concealed cremone (simultaneous top and bottom lock engagement operated by a single lever) locking. No commercially available hardware would work inside of the very small 1" sash profile. The 2Fold® system has been tested to rigorous standards for air infiltration, water infiltration and structure. Additionally, the system is listed with NRFC and qualifies for Energy Star in all 50 states. We are at the beginning of a long trail and look forward to consumer and professional input to guide our development. Get results with the WORLD'S THINNEST DOOR SYSTEM and its cousins.