About this item
The Alarm Controls AM3370C is a Z-bracket with an integrated dress cover for mounting Alarm Controls 600 Series single magnetic locks. When a maglock goes on an inswinging door, the lock body mounts to the frame header but the armature needs a bracket to sit correctly on the door, the Z-bracket (paired with the maglock's L-bracket) is what makes that geometry work, positioning the armature so it meets the magnet squarely. The AM3370C adds an integrated dress cover, which encloses the bracket for a clean, finished appearance instead of exposed mounting hardware. It fits the 600S, 600L, and 600LB single maglocks, with an adjustment range of 2" to 2.75" and a clear anodized (US28) finish.
What the Z-bracket does and when you need it
This is worth understanding, because bracket selection is what makes a maglock install correctly. A magnetic lock has two parts: the electromagnet, which mounts to the door frame header, and the armature plate, which mounts to the door and is what the magnet grabs. On an outswinging door the armature usually bolts flat to the door face, but on an inswinging door, the door swings away from the magnet, so the armature has to be held out on a bracket to line up with the magnet. The Z-bracket is that mounting bracket: it's shaped to carry the armature off the door at the right offset so it meets the maglock face-to-face for full holding force.
The AM3370C is the Z-bracket version with a dress cover, so beyond just doing the mounting job, it conceals the bracket and armature hardware behind a clean cover, which matters on visible interior openings where exposed brackets would look unfinished. The adjustment range of 2" to 2.75" lets you dial in the armature position for proper alignment with the magnet.
Built for the Alarm Controls 600 Series
The AM3370C is matched to the Alarm Controls 600 Series single maglocks, specifically the 600S, 600L, and 600LB models. Using the bracket designed for your maglock matters: the geometry has to be exact for the magnet and armature to mate with full holding force, and a mismatched or generic bracket can leave a gap that reduces holding strength. The bracket measures 10" long by 3.5" high and comes in a clear anodized US28 finish that coordinates with the aluminum maglock housing and typical aluminum door frames.
Because it's the correct factory accessory, it installs as the 600 Series was designed to be mounted, which keeps the lock performing at its rated holding force.
Alarm Controls AM3370C specifications
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Type: Z-bracket with integrated dress cover, maglock mounting accessory.
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For: Alarm Controls 600 Series single magnetic locks (models 600S, 600L, 600LB).
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Application: Mounts the armature for inswinging-door maglock installations.
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Adjustment range: 2" to 2.75".
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Bracket dimensions: 10" L x 3.5" H.
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Finish: Clear anodized (US28).
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Part number: AM3370C.
Why choose the genuine Alarm Controls AM3370C
For an Alarm Controls 600 Series maglock on an inswinging door, the AM3370C is the correct Z-bracket to mount the armature and the dress-cover version keeps the installation looking clean. You get the right geometry for full holding force, an adjustment range to fine-tune armature alignment, an integrated cover that hides the hardware, and a clear anodized finish that matches the maglock and frame. Using the matched factory bracket is the difference between a maglock that holds at its full rating and one that underperforms because the armature doesn't seat squarely.
One thing to confirm before ordering: the AM3370C is for 600 Series single maglocks (600S, 600L, 600LB) on inswinging doors, and it includes the dress cover. Verify your maglock model and that your door is the inswinging configuration that needs a Z-bracket. For outswinging doors or different maglock models, a different bracket applies, we can help you match it.
Order the Alarm Controls AM3370C from American Locksets
We stock Alarm Controls maglocks and accessories from authorized distribution, so every part ships with the manufacturer warranty. Find the matching locks and brackets in the Alarm Controls maglocks and accessories category, or browse all magnetic locks.
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