When did the L Series change to an new ADA Thumbturn?

Effective December 9, 2019, Schlage L Series mortise locks requiring a thumbturn will ship standard with our new ADA thumbturn. The new ADA thumbturn is slightly smaller than the existing ADA design while still meeting ADA requirements. Customers wishing to order the existing standard non-ADA thumbturn or larger ADA thumbturn, will be required to specify this requirement on their order. 

Please see here for part numbers, and exceptions.  

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