lcn closer ada

RELATED FAQS

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The 1521 is simply a re-numbered 4031 closer. They are the same unit.
All LCN closers have UL listings, and are Fire Rated for up to 3 hours.
If an Size 1 (ADA) closer is set to 5 lbs. opening force, it will only have about 3 lbs. (60/70%) closing force. If the closer will not close against air pressure, but the ADA requirements have to ...