Frontline Defense Systems Inc.

Frontline Defense Systems Inc. Is The World’s Only Manufacturer Of The Patented Full-length Interlocking Astragal Door Lock, Known As The Interlocker For Short.

The Interlocker Is The Simplest, Most Basic Method Available To Secure Your Property From Forced Access.

Designed For Both Out-swing And In-swing Doors, Frontline’s Latch Protectors Are Offered In Both Aluminum And Steel, Available In Several Standard Colours, And Can Be Customized To Fit Any Size Of Door.

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Showing 1 - 5 of 5 items
Showing 1 - 5 of 5 items