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AUDAC WMM450 – Fire-Rated Metal Back Box for Flush-Mount Speakers

Regular price $233.00
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Audac  |  SKU: ADC-WMM450

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What is the AUDAC WMM450 back box?

The AUDAC WMM450 is a fire-rated, powder-coated steel back box for in-ceiling and in-wall speakers mounted in hollow structures. It gives the speaker a closed 15-liter enclosure lined with acoustic damping wool, which keeps sound from leaking into the room next door. It fits AUDAC CELO, CENA, CIRA and MERO flush-mount speakers.

What does the AUDAC WMM450 back box do?

AUDAC WMM450 fire-rated speaker back box

The WMM450 mounts above the ceiling or inside the wall cavity, and the speaker installs through it from the room side. Its 15-liter internal volume matches what AUDAC recommends for the open-back CELO and MERO series, so low-frequency response holds up. The steel shell meets fire-rated ceiling requirements, and the damping wool absorbs back-wave energy. Use it in offices, hotel rooms and meeting rooms where sound isolation or fire code applies. Compatible speakers include the CELO8I/W, CELO8SI/W, MERO5 and MERO6. For a non-fire-rated option, see the WMM630 MDF back box.

What are the key features of the AUDAC WMM450 back box?

  • Fire rated — powder-coated steel for fire-rated ceilings and walls.
  • 15-liter volume — matches AUDAC's recommended back volume for CELO and MERO speakers.
  • Acoustic damping wool — lining absorbs back-wave energy.
  • Sound isolation — limits sound leaking into adjacent rooms.
  • Broad compatibility — fits CELO2/5/6/8/8S, CENA3/5/7/8, CIRA5/7/8 and MERO2/5/6.
  • Warranty — backed by a 5-year AUDAC manufacturer warranty.

Technical Specifications

Model WMM450
Dimensions 446 x 455 x 127 mm (W x H x D)
Construction Powder-coated steel
Internal volume 15 liters
Inner finish Acoustic damping wool
Compatible speakers CELO2, CELO5, CELO6, CELO8, CELO8S, CENA3, CENA5, CENA7, CENA8, CIRA5, CIRA7, CIRA8, MERO2, MERO5, MERO6
Warranty 5 years
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