An acoustic panel device includes a panel member and a mount. The panel member includes a porous material. The mount is arranged to captively support the panel member. The mount can be a frame that surrounds the panel member. The frame can define a channel, and a portion of the panel member is disposed in the channel.

The present invention relates to a device for installation into a hose and/or plastic pipe system and mounting of flow measurement sensors which comprises a plastic flow part as a hollow body with a centrally arranged and deformable region with a rectangular cross section. The present invention further relates to the use of the abovementioned device as well as to a method of flow measurement using the device.

A passive ventilation panel and system, in particular for use in doors, ceilings, walls and partitions enables an exchange of supply and return air for at least one room or a room, without the need for additional ventilation equipment, such as ducts, and without the needs to install wall openings or grills for the supply and exhaust air in the space.

A sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics. A sound absorbing panel comprising a height, a width, a length, and a cover. A sound absorbing panel comprising materials characterized by a core density and a core binder percentage. A sound absorbing panel comprises primarily a Rockwool mat. Said core density is between 2.5-4.5 pounds/cubic-foot. Said core binder percentage is between 1.75-2.75 percent. A Rockwool mat weighs between 0.25-0.5 oz. A Rockwool mat comprises a thickness between 35-45 mm.

An acoustic panel device includes a panel member and a mount. The panel member includes a porous material. The mount is arranged to captively support the panel member. The mount can be a frame that surrounds the panel member. The frame can define a channel, and a portion of the panel member is disposed in the channel.

An acoustic panel device includes a panel member and a mount. The panel member includes a porous material. The mount is arranged to captively support the panel member. The mount can be a frame that surrounds the panel member. The frame can define a channel, and a portion of the panel member is disposed in the channel.

To provide a sound insulation sheet member which is excellent in sound insulation performance in a low frequency band and which has a compact configuration. A sound insulation sheet member 1 including a substrate 2 and a concavo-convex structure 3 placed on at least one surface of the substrate 2, in which the concavo-convex structure 3 is provided by repeatedly arranging a plurality of units each defined as a concavo-convex unit shape 4 including a linear convex portion 5, in one direction at substantially constant intervals on the surface of the substrate 2.

A prefabricated wall module may include framing members and one or more insulations members. The insulation member may have pre-incisions, as made by a hot-wire, defining service fitting accommodations. The service fitting accommodations are accessible on the inside face of the insulation. The service fitting accommodations may be either or both of vertically or laterally extending, and are located in the same places in each module, the vertical locations being next to the studs, to which service fittings may typically be mounted, the lateral accommodations being at heights typical of switches and wall outlets. The insulation members may be supplied with tabs filling the accommodations. The tabs may be snapped out as required. The insulation members may have stud channels that are shallower than the studs, such that an air gap is established between the insulation and the internal gypsum board covering.

Sound absorbing material for use in rooms inside buildings. The material comprises a continuous polymeric film (11) having smooth surfaces, said film having a thickness (t) of about 0.1 to 0.3 mm. The film is provided with numerous substantially parallel discontinuous microslits (12) with a degree of perforation of from 0.3-3%. The microslits are cut with laser devices to produce a highly smooth and level surface. The film is tensioned in a frame (16) with a level film surface or curved film surface.

To provide a sound insulation sheet member which is excellent in sound insulation performance in a low frequency band and which has a compact configuration. A sound insulation sheet member 1 including a substrate 2 and a concavo-convex structure 3 placed on at least one surface of the substrate 2, in which the concavo-convex structure 3 is provided by repeatedly arranging a plurality of units each defined as a concavo-convex unit shape 4 including a linear convex portion 5, in one direction at substantially constant intervals on the surface of the substrate 2.