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“ sound rating on lf siries doors ”

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Resolution: The 3130 Series closer is UL listed- Fire Rated (UL-10C) for up to 3 Hr. The Door and Frame Manufacturer needs to be contacted to verify their Door/Frame rating would not be ...:

What is a Cam Lift Hinge?

Resolution: Cam Lift Hinges are specially designed hinges used mainly on acoustical door assemblies. The Cam Lift Hinge lifts the door during its travel and seats the door bottom for a pos...:

What is an STC rating?

Resolution: STC stands for Sound Transmission Class. An STC (Sound Transmission Class) is a single number rating system derived from measured values of sound transmission loss in accordance with ASTM E90...:

The Von Duprin 98 or 99 ALK kit will not sound the horn

Resolution: Followings are the reason for 98/99 exit alarm ALK not sound when push bar is activated. Make sure key switch on exit alarm ALK is turned on, wait for 20 seconds before you activating the pushba...:

Why is the Von Duprin exit alarm ALK going into alarm on it's own?

Resolution: The following may cause the ALK to go into alarm: Make sure red and blue wires on the RX switch are connected to the exit alarm ALK terminal block and yellow wire is taped off. Check the red an...:

Does Steelcraft offer seamless edge door?

Resolution: Steelcraft does offer two types of seamless edge construction that support SDI classification standard Model 2 -seamless. Filled Edge: Epoxy fill, two part epoxy filled and dressed smooth. (LF, ...: