What is QM for Von Duprin?
Accepting orders for the QM option on 98/99 Rim Exit Devices, 33A/35A Rim Exit Devices, and 996L/L-BE-R/V Trims starting 4/23/2018.
Accepting orders for the QM option on the 98/9927 Surface Vert...
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Will the QM option make my door completely silent?
The QM option reduces the operational noise of
the Exit Device or Trim during normal operation.Other factors can cause the complete door system to make noise.
To be most effective, combine the QM d...
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Can a 9947WDC-F LBR device use the 283 strike for wood frames?
A 9847WDC-F LBR or 9947WDC-F LBR device must use the 338 strike to maintain its fire rating.
Using a 283 Strike in a wood frame would void the Fire Exit Hardware UL label of the 98/9947WDC-F LBR dev...
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