When you absolutely, positively, want to lock a door – Use Positive Lock
Call Us: 1-800-342-7670




At Positive Lock, Inc. we focus on providing quality American made UL listed panic hardware and security locks at reasonable prices, while guaranteeing great customer service. No matter the size of your company or your security needs you can rest easy knowing that door security is Positive Locks number one priority! Our sales, customer service, technical support, and shipping staff will be happy to assist you in any way possible!

“When You Absolutely, Positively Want to Lock A Door – Use Positive Lock!”


Established: February 1989

Inventor: Ralph Beals

Sales & Marketing: Phillip Murders


In February of 1989 Ralph Beals manufactured the first “TH” series Positive Lock, which is still in production today. The lock was used to replace drop in lock bars, which added to a doors security but were easily misplaced. This lock, which locks both sides of the door simultaneously, is securely mounted to the door at all times.  As Safety and Building Codes evolved so did Positive Lock. When Panic Hardware became a requirement, Positive Lock manufactured the THPA(W). The THPA(W) gained notoriety as UL listed panic hardware, but also as a high security lock. Due to the increased security retailers nationwide began placing them on their doors to prevent break-ins. Positive Lock now has a delayed egress system which gives a store additional time to stop a thief.