von duprin quiet

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Von Duprin Hydraulic Damper Since transitioning in February 2014 to a new hydraulic damper, Von Duprin is announcing the use of another alternative design. Despite the small design differences, t...
Followings are the list of the electric latch retraction EL/HDEL (hex dogging), QEL (quiet) kits: 114317-00 QELA Mod. Conv. Kit 040061-00 QELA Mod. Conv. Kit...
Overhead Concealed door closers are used to provide a more aesthetic look to the opening.  Concealed in either the frame or the door Offer the ability to be adjusted to maintain control o...