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Extension springs

Counterbalanced springs which provide lifting power by stretching. Also called stretch springs. Extension springs are mounted to the rear track hangers on each side of the garage. They are attached to a pulley at the other end of the spring.

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DSI Door Services, Inc.
45 Mason Street, Salem MA 01970 | Phone: (978) 741-1600
Fax: (978) 741-1441 | Toll Free 1-800-425-0662

Area served: Beverly, Boxford, Danvers, Essex, Georgetown, Gloucester, Hamilton, Ipswich, Lynn, Lynnfield,

Malden, Manchester-by-the-Sea, Marblehead, Melrose, Middleton, North Reading, Peabody, Rockport, Rowley, Salem,

Saugus, Swampscott, Topsfield, Wakefield.

Business hours: Monday to Friday 7am to 5pm; Evenings and weekends by appointment upon request.

Construction Supervisor: #CS29016
Home Improvement Contractor (HIC) : #161210