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Overhead Door Parts for Sectional and Rolling Steel

Overhead Door Parts

Featuring a large inventory of Raynor, LiftMaster,Cookson and Cornell door parts, Big Dock and Door is your online destination for the essential components to repair or construct your overhead door systems. We carry motor operator parts and accessories as well as photo eyes for commercial door applications. You can also find residential garage door systems and door springs to use in your home at Big Dock and Door.

Get overhead door parts and components for commercial and residential applications at Big Dock and Door


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LM21XPBB, fire release device, fire fly 3, fire fly 3 plus, liftmaster fire release, release device, fire door Overhead Door Sling, Door Sling, Rolling Door Sling, Overhead Lifting Strap, Door Strap Sling
Universal Slat Adaptor
Our Price: $70.00
Overhead Door Sling
Our Price: $265.00

Universal Slat Adaptor (USA)

The Cookson Company just announced a new addition to their parts offering to help support your service business on competitive products. We now offer a Universal Slat Adaptor that allows retro fit slat replacement on other manufacturer’s doors. The Universal Slat Adaptor will allow Cookson and new OHD replacement slats to link up with a wide variety of competitor slats.

Each Universal Slat Adaptor (USA) is constructed of 14Ga. Extruded Aluminum in a clear anodized finish. The USA is sold in 21’ lengths, shipped in three 7’ pieces or cut to length.

Please note these Universal Slat Adaptor restrictions:

Use only on interior mounted doors Replacement slats must be attached below the USA Cannot be used on doors with windlocks Cannot be used on fire rated doors.

Extended Performance Fire Release Device by LiftMaster

The XPBB release device provides the functionality of a standalone fire alarm system including
battery backup for installations prone to power outages or the existing alarm system is unable
to support the door release system.


All LiftMaster Openers and Operators should be purchased through a Dealer and professionally
installed.
Overhead Door Interlocking Sling

The difficult task of installing overhead doors is now done efficiently with these Overhead Door Slings. Overhead Door Slings are available in five models but the 5"x7' slings are in stock ready to ship same day. Comes with locking pin
Winding Bar, Tension Bar, Tension Rod, Winding Rod, Door Bar, Door spring bar, spring bar punched angle, aluminum punched angle, garage door angle, garage door hanger aluminum Limit Shaft Kit
Punched Angle
Our Price: $5.00

Overhead Door Winding (Tension) Bar

  • Hex Bar to prevent the bar from rolling on a ladder or on the ground
  • Small Size (WB1): 18" Long Rod with 7/16" & 1/2" Diameter Sides
  • Large Size (WB2): 24" Long Rod with 1/2" & 5/8" Diameter Sides
  • Comes as a pair

Punched Aluminum Angle

  • 16 Gauge Aluminum
  • Comes in 5' Sections
  • 1-1/4" x 1-1/4" Angle
Used to hang the back hangs of a sectional garage door and to hang the garage door operator down from the rafters

Order now for same day shipping!!

Replacement Limit Shaft for LiftMaster Models: T, APT, SD & GH 1/2-2HP
Complete Limit Shaft with: Limit Shaft, Limit Nuts, Limit Bearings, Limit Sprocket, Interrupter Cup, Shim Washer, Compression Ring, Roll Pin and E-Rings.
Limit Shaft Kit
Replacement Limit Shaft for LiftMaster Models: GT, GSD & GH 3HP
Complete Limit Shaft with: Limit Shaft, Limit Nuts, Limit Bearings, Limit Sprocket, Interrupter Cup, Shim Washer, Compression Ring, Roll Pin and E-Rings.