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SMR-2GU-180x55 Round Smoke & Sensor Universal Flush In-Wall Mount | Two-Gang Ring Included

SMR-2GU-180x55 Round Smoke & Sensor Universal Flush In-Wall Mount | Two-Gang Ring Included

The SeeLess Universal Two-Gang Round Smoke & Sensor Flush In-Wall Mount is engineered for trim-free integration of round smoke detectors and sensors in modern residential and commercial interiors. Designed to create a clean, recessed appearance, this plaster-in platform allows devices to sit flush with the finished wall or ceiling surface—reducing visual clutter while maintaining proper sensor exposure.

Built around a universal two-gang adapter ring, the platform installs into standard 4-square metal back boxes and supports Carlon Old Work plastic boxes and low-voltage mud rings for added installation flexibility. The base opening is designed to accommodate devices with a minimum diameter of 6.18 inches, ensuring full coverage of the two-gang ring opening and a refined finished result.

This universal mount is designed for use with select round smoke and sensor devices, including the System Sensor L-Series, as well as other devices that meet the required dimensional criteria. Suitable for both low-voltage applications with no box and traditional wiring installations requiring a back box, this platform delivers a consistent, architectural finish across a wide range of projects.

Alternate Ring Option:
A single-gang adapter ring may be supplied in place of the standard two-gang ring upon request. Please contact sales@seeless.com prior to ordering to confirm configuration and device requirements.

Important Note: While this product has not yet been UL or NFPA certified, third-party laboratory testing has confirmed no obstruction of smoke or sensor functionality when installed properly. For code compliance, verification with the local Authority Having Jurisdiction (AHJ) or building inspector is recommended.

Click here to view the third-party test results.

U.S. and Int’l Patents: www.seeless.com/patents.

Features and Benefits:

  • Universal Compatibility – Works with standard 4S back boxes and Carlon Old Work boxes or mud rings
  • Low-Voltage Ready – No box required for Class 2 wiring setups
  • Sustainable Material – Made from fully eco-friendly gypsum

  • Clean Aesthetics – Seamless recessed integration into drywall

  • Flexible Fit – Adjustable brackets for 1/2", 5/8", and 3/4" drywall

  • Includes – 2-Gang Universal Ring

Additional Information:

**For bulk orders over $2500, please contact sales@seeless.com for a shipping quote.

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