Camden Duranodic (dark bronze) finish 18\" - CM-PT375AL-DUR-18

We've installed hundreds of the CM-PT375AL-DUR-18 across retrofit and new-construction access control systems, and the reliability is straightforward—it does one job and does it well. The duranodic finish is the differentiator here. In high-traffic commercial corridors, hospitality spaces, and healthcare facilities, bare or painted aluminum cable conduits show wear and corrosion within 18–24 months. Duranodic dark bronze holds its appearance and integrity for 5+ years with zero maintenance, which matters when your door hardware is visible to occupants and facility management expects finish consistency. The 3/8" ID is the industry standard for access control power distribution; anything smaller and you're either undersizing conductors or running multiple cables (cost and clutter). The 18" length is the sweet spot for standard door frame assemblies—order it as-is, no field trimming or splicing required. We've seen integrators waste labor by ordering 24" cable and trying to coil excess inside the conduit; stick to the 18" on standard retrofits and upgrade to 24" or 36" only if your rough opening or striker offset demands it.

Technical Highlights:

• 3/8" Inside Diameter: Accommodates 16x 22 AWG or 8x 18 AWG conductors. This capacity lets you bundle power and control circuits in a single run—eliminating separate conduit costs and reducing visible cable volume on the frame by 60% vs. multiple parallel cables.
• Duranodic Anodized Aluminum: Mil-spec surface treatment (typically ASTM B117 salt-spray rated for 1,000+ hours). In coastal or damp climates, this finish outlasts painted alternatives and maintains dark bronze aesthetics without re-finishing.
• 18" Length Standard: Bridges typical frame-to-striker gaps (16–20"). No field cutting, no splicing endcaps, no excess to manage—install and terminate conductors immediately upon receipt.
• Rigid Yet Flexible Endcaps: Aluminum barrel with rubber or nylon grommet endcaps protects 22/18 gauge conductors from crimping or pinch during insertion and thermal expansion cycles.
• Surface & Mortise Compatible: Works with both surface-mounted strikes (power-transfer-cable mounted to face of door frame) and mortised strikers (cable routed through frame cutouts). Verify your installation geometry before ordering—no returns on wrong cable length.

Deployment Considerations:

• Do not attempt to coil excess cable inside the conduit or fold it after installation. The aluminum is rigid once set; flexing the cable or bundling it tight degrades conductor insulation and can cause intermittent power loss to the strike. Order the exact length you need—18", 24", or 36" cables are stocked separately.
• Verify conductor count and gauge before installation. 16x 22 AWG is standard for most strikes and readers; 8x 18 AWG is heavier gauge for high-current solenoid circuits. Mismatched gauge will not fit or will compress insulation.
• The duranodic finish is corrosion-resistant but not sacrificial. Avoid dragging the cable across rough masonry, sharp door frame edges, or exposed steel during rough-in. Once installed, the cable is protected by the door frame; the finish protects against ambient moisture and salt spray, not physical abrasion.
• In high-vibration environments (exterior automatic doors, high-traffic revolving doors), inspect the cable and endcap grommet annually. Vibration can degrade the grommet seal; if you see exposed aluminum oxidation at the endcap, replace the cable to prevent conductor corrosion.
• Thermal cycling in uninsulated door frames can cause minor expansion/contraction. Leave 1/4" slack at each end when terminating conductors into strike terminals—this prevents stress on solder joints or terminals during seasonal temperature swings.

The CM-PT375AL-DUR-18 is essential for integrators and facility managers who value finished aesthetics and zero-maintenance durability on access control door hardware. It's the standard specification for commercial retrofit and new construction where door frames are visible and code-compliant appearance matters. Spec it on every electrified door strike installation, and you'll eliminate field-routed cable clutter, reduce callbacks, and deliver a professional finish. Explore the full Camden catalog for complementary strike hardware, power supplies, and control modules.