8540

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GRI

GRI 4612 Mini Curtain Door Switch, Closed Loop, Up to 2" Gap

JMAC# GRI-4612

GRI has solved the curtain door installation problem with the 4612 Curtain Door Series. The 4612 resolves the left or right installation problem plus allows the installer to adapt the install...
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Now: $36.50

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GRI

GRI 4510AU Concrete Concealed Switch, Universal Bracket

JMAC# GRI-4510AU

The GRI 4510AU concrete concealed SPDT switch is equipped with and a universal magnet. The 4510AU series features all stainless steel construction for maximum resistance to corrosion and has a wide...

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Was:

Now: $37.00

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GRI

GRI 4510A Concrete Concealed Switch, Magnet on S-12 Bracket

JMAC# GRI-4510A

Perhaps the best way to protect overhead door contacts from industrial motorized traffic like forklifts and large trucks is to recess or bury them into the concrete floor, allowing vehicles of this...

MSRP:

Was:

Now: $44.75

Limited Stock
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Concrete Concealed Switch

GRI 8540 groups concrete concealed switches and mini curtain door switches that share the same magnet.

The 4510 series features all stainless steel construction for maximum resistance to corrosion and has a wide working gap for those loose or badly worn overhead doors. You will find the 4612, 4510A, and 4510AU here. Options span closed loop contacts. The group also lists 4510A magnets on their own.

Related: all GRI magnets and switch sets and end of line resistors. Browse the full GRI catalog. Contact our team to match a switch set to your door.