door in negative pressure

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To correctly answer this question, we need to know how much more force is required to get the door closed. They could try turning the Rod & Shoe over (short side of shoe towards the hinge), or they...
LCN does not recommend this type of installation, and has never sold a coupler to do this.
H-Series doors in single leaf applications with only mortise locks meet the FBC / NOA Zone 4 requirements? 3070 max flush outswing applications Zone 4 requires 120 to 170 psf.
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 ...
Blast and pressure resistant doors protect people and property from explosions and shrapnel. More damage is generally caused by shrapnel than the blast itself, and a properly specified and engineer...
Steelcraft Blast Resistant Assemblies meet the following Blast Test Standards:                    ...
The L-Series doors are designed for virtually all construction requirements in commercial building applications. They have also been tested and approved for uniform wind load per ASTM E330.  ...