Chain blocks | Garaga
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Chain blocks


A chain block is used with a manually operated garage door and can be installed on either side of the door. They are secured to the full shaft on which the spring system is secured.

Its use is strongly suggested for any door over 10 ft. (3 m) high so the door can be operated safely.

For smaller doors, a pull chain can be used.

Chain block    Pull chain

PK Garage Door Co. LLC
Derry NH 03038 | Phone (603) 432-0114


Area served: Londonderry, Manchester, Windham, Southern New Hampshire and Northeast Massachusetts.

Business hours: Monday to Friday from 8 AM to 5 PM.


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