The 615 and 616 Series rolling service doors offer an attractive, durable option to fit door openings up to 16' wide and 16' high (4877mm and 4877).  The 615 and 616 Series are differentiated by their slat profiles and weatherseal options.  The 615 Series is offered with curved slats and vinyl weatherstripping on the bottom bar.  The flat-slat 616 Series, with weatherstripping on the bottom, exterior curtain-side guides and internal hood, is better suited for applications where minimizing air infiltration is a consideration.