A ceiling system in one embodiment includes a support grid including intersecting grid support members and grid openings formed between the grid support members. A vertical baffle is positioned in a grid opening and is attached to the support grid. The baffle includes opposing front and rear faces extending between opposing lateral sides of the baffle. First and second mounting grooves formed in the baffle engage and support the baffle from the grid. In one embodiment, one of the mounting grooves is disposed in each lateral side to support the baffle from opposite sides. The baffle may further include a third mounting groove formed in the rear face which engages the support grid to help align and squarely register the baffle with respect to the grid for clean linear visuals. In one embodiment, the grid support members may have a standard T-shaped cross section.

An elongated structural ceiling grid member including an open-ended upper portion, an open-ended lower portion, and first and second flanges. The open-ended upper section is formed by a floor and a first set of second parallel and spaced sidewalls extending from and substantially perpendicular to the floor. The open-ended upper portion has an opening opposite the floor and defined by the first and second parallel and spaced sidewalls. The open-ended lower portion is formed by a ceiling and a second set of parallel and spaced sidewalls that extend from and are substantially perpendicular to the ceiling. The open-ended lower portion has a second opening opposite the ceiling and defined by the third and fourth parallel and spaced sidewalls. The first flange is attached to and extends perpendicular to the third parallel and spaced sidewall and the second flange is attached to and extends perpendicular to the fourth parallel and spaced sidewall.

A ceiling tile comprises a first layer of material and a second layer of a structurally stiff material distinct from the material of the first layer, positioned to be below the first layer when installed in a ceiling, wherein the second layer can support its weight and the weight of other layers. The first layer is visible through the openings in the second layer when installed. The second layer might be steel, aluminum, copper, bronze, brass, or iron with openings cut into the second layer. The first layer can be acoustical fiber, wool, fabric, wood, leather, rubber, and acrylic and supported the second layer, with the openings being sufficiently arranged so that the first layer is fully supported by portions of the second layer that are not the openings. Three or more layers are also possible, with some or all of the layers are visible through lower layers.

In a dropped ceiling assembly system elements are provided which include an elongate planar shelf held below an elongate spine. The shelf has lateral edges which can support edges of a ceiling tile resting thereon. This spine is configured to be held in position either adjacent to spines of other elements within a dropped ceiling or from above, such as by suspension wires passing through suspension holes in the spine. A compartment is provided on an underside of the shelf which is sized and shaped to receive and hold at least a portion of a loudspeaker therein. The loudspeaker mounting system is thus integrated into the shelf which also acts to hold ceiling tiles within a dropped ceiling.

A lighting assembly is provided that includes a light fixture in combination with a support grid such as a drop ceiling t-bar. The light fixture can be configured to use a t-bar as the main form of support. The light fixture can be push-fit onto a t-bar or use a clip to join two or more portions of the light fixture to an installed t-bar. Once attached to the T-bar, the light fixture itself can provides support for a ceiling tile. Various embodiments are provided which achieve a variety of light distributions useful in typical illumination applications. Both recessed and suspended fixture types are achieved in various embodiments which are particularly well suited for LED lighting.

A ceiling grid lighting assembly for use in suspended ceiling systems is provided with multiple linear lighting modules in parallel arrangement. End plates are used to connect, support, and enclose longitudinal ends of the elongate body of each linear lighting modules while simultaneously functioning as reflective faces for optical cavities. A configured gap spacing between individual linear lighting modules can be used to house and support components such as additional light sources, acoustic or decorative panels, HVAC components, or power systems, controls or sensors. The end plate can also be configured to allow a T-bar to be placed in the configured gap spacing thereby enabling the mounting of the assembly in-line upon the longitudinal axis of a ceiling grid T-bar. Embodiments of linear lighting modules are presented comprising LED light sources, light guides and diffusers housed within the elongate body. The light guides may be edgelit from one or two sides and aligned horizontally or tilted relative to the ceiling grid plane.

The inventive concept relates to a planar suspended ceiling system comprising: a ceiling tile (10) having a front side (1), a rear side (2) and at least one side edge extending between the front side (1) and the rear side (2), the ceiling tile (10) comprising an acoustical absorbing body (4), and a front cover (3) arranged at the front side (1) of the ceiling tile (10); wherein a slit (5) is provided extending across the entire rear side (2) of the acoustical absorbing body (4) thereby dividing said acoustical absorbing body (4) into a first and a second body section (4a, 4b), and having a depth such that the ceiling tile (10) is foldable along the slit (5) with the front cover (3) acting as a joint; wherein opposing portions of the at least one side edge are provided with each a groove (6) and; a grid of profiles (11) for supporting said ceiling tile (10) in a planar, non-folded state in which flanges (7) of the grid of profiles (11) extend into the grooves (6) thereby supporting the ceiling tile (10).

This disclosure relates to an assembly that is configured to be installed or integrated into a suspended grid ceiling.

Light fixture embodiments for direct downlighting applications provide benefits of low overall fixture profile height, increased light output, enhanced uniformity of brightness and color by use of novel edge-lit optical elements that functions simultaneously as a diffuser and direct throughput lens, as well as an outcoupling TIR light guide. The light fixture can provide low-glare ambient light or more directional wall wash, task and accent lighting. The light fixture typically comprises a 3-dimensional extruded linear support body which retains and aligns LED boards, reflectors and edge-lit optical elements, such as a diffuser or light guide. The edge-lit design enables the height of the lighting assembly body to be equivalent to or less than the height of T-bar main beams or cross tees. This is very important in applications where there is zero or little available plenum space above the ceiling grid. Embodiments are provided that comprise mounting of the light fixture into a ceiling grid using clips or mounting hardware as well as end plates without impacting the plenum requirements. Provided are typical benefits of an edge-lit light guide design including shallow depth, extended emitting area, and off axis light distributions such as asymmetric and symmetric batwing distributions particularly useful in downlighting and other lighting applications. Additionally, area dedicated to bezels or edge reflectors can greatly improve appearance due to reduced or eliminated hotspotting and bright edges to provide a fixture face with very high percentage of light emitting area. Further embodiments are included that may be surface mounted in a cove lighting arrangement or suspended hanging from a T-bar in a suspended wood panel ceiling system. Examples are also provided of the light fixture used in ceiling grid systems incorporating drywall panels.

Described herein is a building panel comprising: a substrate, and a coating applied to the substrate, the coating comprising a blend of an antimicrobial composition, a binder, and a pigment, wherein the antimicrobial composition consists essentially of zinc borate.