Garage Door Opener & Signal Device Hardware

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Pneumatic controls are used as safety devices in commercial and industrial settings for when the door closes. The air hose on the bottom of the door detects an increase in pressure if the door hits something. The opener then reverses rather than causing injury or damaging the door.

Pneumatic controls should be set to shut off when the door is about two inches off the floor. This keeps the door from opening back up when the bottom of the door hits the floor.



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Huge inventory of parts and torsion springs for same or next day shipping! Here you will find all you need in the most common sizes of 1 3/4," 2," 2 1/4," and 2 5/8" inside diameter springs. Larger 3 3/4" and 6" inside diameter commercial and industrial springs may require a day or two to ship. You'll also find TorqueMaster Springs, Extension Springs, Self-Storage door springs, steel rolling door springs and springs for one piece single panel doors.

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Please note. Shipping times and costs have changed. Normal transit times are currently not guaranteed, even on next day and second day shipments. Shipping prices on items over eight feet have more than tripled.