door stuck bottom piece wont rise

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The minimum door thickness that the AD or CO series lock will mount on is 1 3/8".  Be advised that this will require additional spacers to be ordered separately to allow the lock to mount...
The minimum top rail required to mount a 4110 closer is 5-1/8" measured from the stop of the frame. If the top rail is less than 5-1/8" the 4110-18 drop plate is required.
AL-Series and discontinued D Lever-Series locks use castle nuts to hold the chassis to the spring cages and to keep the chassis positioned in the door. This causes confusion at times when the lock ...
The 2010 and 2030 closer are not the same. The 2010 Series closer uses the (larger) 4010 cylinder which requires a 4" minimum frame tube to mount in. The 2030 uses the (narrow) "Pacer" cylinder...
 8827 vertical rod device is available for 7 or 8 feet tall door standard. 12", 24", 36" and 48" extension rod kits are available for taller doors (8 feet max on fire rated openings). We do no...
After installing a classroom deadbolt, there is potential for the thumbturn to project the bolt only, get stuck in one position, or move both directions but not move the bolt.  These are caused fro...
The U-Factor, R-Value and K-Thermal Rating are measurements of thermal transmission through building products. U-Factor: Overall co-efficient of heat transmission passage through a built-up panel...