Primacoustic Nimbus Black

Primacoustic Nimbus is a rectangular ceiling-mounted sound-absorbing panel, ideal for acoustic treatment in any room, available in black. Each panel measures 61 x 122 cm and is 38 mm thick. In this version, the panels feature a 90° edge. All mounting hardware is included with the Primacoustic Nimbus.

All ceiling panels are made of 38 mm thick, high-density glass wool (96 kg/m³) for exceptionally uniform sound absorption. The glass wool is enclosed within a protective micro-mesh, and the edges are resin-coated to minimize the release of glass fibers (which are non-toxic). The acoustic panel is then covered with an acoustically transparent fabric or finished with the paintable Absolute White coating.

As with all Primacoustic panels, the Clouds are laboratory-tested for acoustic performance and fire safety, achieving the most stringent Class A/1 rating in North America and Class B in Europe, making them safe for use in all types of installations.

Nimbus panels can be suspended horizontally from the ceiling in spaces such as restaurants, lobbies, gyms, or any other space where discreet acoustic treatment is desired. Installation is easy. Each kit includes two high-density glass wool panels plus all the hardware needed to mount them horizontally from the ceiling. The panels can also be mounted on walls using Surface Impaler brackets or installed as vertically suspended baffles using Corkscrew anchors (sold separately).

Examples of Primacoustic ceiling panel placement

How Nimbus Panels Work

Primacoustic Nimbus absorbs the sound energy produced by speakers by converting it into heat. The sound energy, which travels through variations in air pressure, penetrates the panel, causing the tiny glass fibers to vibrate and generate heat. This thermodynamic energy transfer effectively absorbs direct sound energy and prevents it from reflecting back into the mixing position (sweet spot).

On its own, the 38mm-thick glass wool panel is 100% effective for frequencies between 400 Hz and 20 kHz. To improve sound absorption and control an even broader frequency spectrum, the Primacoustic Nimbus can be angled to vary the air gap between the Nimbus and the ceiling. This allows the panel's surface to also absorb any reflections from the ceiling.

Surface and Corner Impaler Mounting System

Primacoustic's Impaler system is used to provide the user or installer with a simple, quick, and effective method for mounting fiberglass acoustic ceiling panels on walls as well, without causing significant damage to the surface. The galvanized steel impaler features a series of protruding, sharp prongs that penetrate the panel to secure it in place during installation. To ensure the panels do not shift after installation, we recommend applying a small amount of adhesive to the tips of the Impaler during the mounting process; this adds an extra layer of security and reduces the risk of tampering. The Impaler mounts are secured to the surface using standard anchors and screws for concrete or drywall. A set of drywall anchors with matching screws is included.

Primacoustic Nimbus Black Documentation and Certifications

All Primacoustic panels are laboratory-tested for acoustic performance and fire safety. Class A/1 fire-rated, they meet the stringent ASTM-E84 and CAN-UL S102 requirements for flame spread and smoke development. This makes Broadway panels safe for use in commercial, government, and institutional installations.