Seco-Larm SM-4201-LQ Track-Mount Overhead Door Magnetic Contact Switch, Rugged Aluminum Housing, 36" Wire Leads, For Closed Loop Circuits, 3" Gap, Weatherproof, Mounting Bracket Included industrial2 The inherent strength of standard

The inherent strength of standard (untreated) grades does not pose a problem when they are used in routine quadrant folded applications

Gold plated posted with gold plated red and black knobs

Fastest gun zeroing and sighting system

Founded in 1865

Seco-Larm SM-4201-LQ Track-Mount Overhead Door Magnetic Contact Switch, Rugged Aluminum Housing, 36" Wire Leads, For Closed Loop Circuits, 3" Gap, Weatherproof, Mounting Bracket Included industrial2 The inherent strength of standardSeco Larm SM 4201 LQ Track Mount Overhead Door Magnetic Contact Switch, Rugged Aluminum Housing, 36" Wire Leads, For Closed Loop Circuits, 3" Gap, Weatherproof, Mounting Bracket Included Seco Larm SM 4201 LQ Track Mount Overhead Door Magnetic Contact Switch, Rugged Aluminum Housing, 36" Wire Leads, For Closed Loop Circuits, 3" Gap, Weatherproof, Mounting Bracket Included Key Features: Used for overhead doors in both industrial and residential