Door Closers For Access Control-OLD

1

Which type of door closer is most popular for commercial openings?

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2

What is the minimum closer size for a commercial door 34" wide?

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3

What form factor of closer tucks the arm flush with the frame of the door?

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4

Which of closing phases can sometimes take 5 - 7 seconds despite the door only moving a few inches?

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5

Which type of closer is typically too weak for doors greater than 42" wide?

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6

Which criteria below is required of egress locks, and typically excludes door closer locks from classroom defense use?

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1. "openable from the egress side without the use of a key or special knowledge or effort"
1. "retractable on demand through use of special key on outside of door"
1. "placement triggers fire alarm signal that notifies authorities"
1. "user must break glass to access the lock and to sound alarm"