A multifunctional support assembly for use in a suspended ceiling system having a T-bar grid arrangement supporting ceiling tiles. The multifunctional ceiling support assembly comprises an elongate body having an elongate planar base portion having first and second lateral ends, first and second longitudinal ends, and a top plane; first and second connecting members each positioned at the first and second longitudinal ends of the elongate body and configured with support portions capable of attachment to the T-bar grid arrangement; and a third connecting member mounted on the top plane of the elongate body, the third connecting extends up from the elongate body and functions to separate and position ceiling tiles within the T-bar grid arrangement.

A grid mounting system for a suspended ceiling system in one embodiment includes a support structure and a mounting bracket coupled to the support structure. An elongated first grid member is pivotably coupled to the mounting bracket about a pivot axis defined by a pivot member. The first grid member is movable about the pivot axis in a plurality of angular mounting positions. In one embodiment, the grid mounting system further includes a second grid member which may be pivotably or fixedly coupled to the mounting bracket. The support structure may be a wall or perimeter trim bracket attached to the wall in some installations.

A structural grid support system adapted for transferring seismic loads to the vertical structural supports of a modular structure. The system includes larger and longer high load capacity main runners with mechanically fastened cross tees, which transfer seismic forces without failing. The structural grid can provide a diaphragm using mechanically fastened connections in a single horizontal plane without requiring additional overhead support from the roof deck, or requiring fewer such supports. The main runners may include additional connecting elements disposed within the usable space beneath the runner (e.g., ventral threaded receivers) for attaching deployment-specific equipment or hardware, such as network cable trays.

A structural grid support system adapted for transferring seismic loads to the vertical structural supports of a modular structure. The system includes larger and longer high load capacity main runners with mechanically fastened cross tees, which transfer seismic forces without failing. The structural grid can provide a diaphragm using mechanically fastened connections in a single horizontal plane without requiring additional overhead support from the roof deck, or requiring fewer such supports. The main runners may include additional connecting elements disposed within the usable space beneath the runner (e.g., ventral threaded receivers) for attaching deployment-specific equipment or hardware, such as network cable trays.

Described herein are mineral fiber compositions having enhanced characteristics, such as biopersistence and resistance to heat induced shrinkage. Also described are methods for making and using the same. Such compositions may comprise manganese oxide and aluminum oxide.

A luminaire module includes a support structure configured for an overhead or region of a defined space suitable to support the luminaire module. The support structure may support a plurality of panels with each defining an illuminatable presentation surface, the plurality including at least one first panel including a first peripheral region. The first panel may be inclined at a first angle of less than 90 degrees from a first reference plane, and one or more second panels, each of which being oriented to be upright at a second angle of less than 90 degrees from a second reference plane. The luminaire module may be configured to be assembled in an array with the presentation surfaces in the array providing a composite image in three dimensions formed by a plurality of image segments provided by the presentation surfaces of the modules in the array.

The disclosure relates to support members for ceiling systems, such as those that can be formed into an interconnected grid to be suspended from a ceiling and support ceiling tiles. One aspect of the disclosure is a linearly-extending support member for a ceiling tile. The support member has a cross-sectional shape that includes a substantially vertical central web with a top end and a bottom end; at least one flange extending substantially horizontally from the bottom end of the web, the flange having an upper surface and a lower surface; and a bulb extending from the top end of the web, the bulb having a first side and a second side with a cavity therebetween, the bulb having an upper portion and a lower portion adjacent the top end of the web, wherein the entire lower portion of the bulb is narrower than the upper portion of the bulb and wider than the central web, the bulb comprising a series of spaced apertures formed therein through both the first side and the second side of the bulb, each aperture being disposed at least partially in the lower portion of the bulb, each aperture having an upper portion and a lower portion, wherein the upper portion of the aperture is rounded.

A ceiling system is provided for use in a building space having a plurality of walls. The ceiling system includes a grid system that extends to at least two of the plurality of walls and separates the building space into an occupiable space below the grid system and a plenum space above the grid system; and a plurality of ceiling tiles that are supported by the grid system and, with the grid system, create a barrier between the occupiable space and the plenum space, the plurality of ceiling tiles including three different polygonal non-rectangular ceiling tiles

An elongated sheet metal channel for transversely supporting drywall grid tees at regular intervals along the channel, the channel having a generally vertical web, and a lower flange and an upper flange, a vertical spacing between the flanges being sufficient to receive upright grid tees at the intervals, the lower flange having outer and mid-width portions lying in a generally horizontal plane at an interval when a tee is received therein, opposed formations stamped into one of the flanges at the intervals to longitudinally locate the grid tee, the upper flange at said intervals having a pocket for receiving a distorted end of a grid tee.

An acoustical ceiling panel including a first layer having a first major surface opposite a second major surface and a side surface extending therebetween, a second layer having a first major surface opposite a second major surface and a side surface extending therebetween, and a sealing layer having a first major surface opposite a second major surface and a side surface extending therebetween. The sealing layer may be positioned between the first major surface of the first layer and the second major surface of the second layer. The side surface of the sealing layer may extend beyond the side surface of the first layer and the side surface of the second layer.