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2. Perforated metal - Wikipedia

   en.wikipedia.org/wiki/Perforated_metal

   Perforated metal has been utilized across a variety of industries including, but not limited to: Ceiling of Culture Palace (Tel Aviv) concert hall is covered with perforated metal panels Perforated steel Marston Matting airfield. Architectural - infill panels, sunshade, cladding, column covers, metal signage, site amenities, fencing screens ...

3. Marston Mat - Wikipedia

   en.wikipedia.org/wiki/Marston_mat

   RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...

4. Micro perforated plate - Wikipedia

   en.wikipedia.org/wiki/Micro_perforated_plate

   A micro perforated plate (MPP) is a device used to absorb sound, reducing its intensity. It consists of a thin flat plate, made from one of several different materials, with small holes punched in it. An MPP offers an alternative to traditional sound absorbers made from porous materials.

5. Hendrick Manufacturing Company - Wikipedia

   en.wikipedia.org/wiki/Hendrick_Manufacturing_Company

   Hendrick Manufacturing Company is an American perforated metal manufacturer founded in 1876 in Carbondale, Pennsylvania, where it is still based.Over the years, additional manufacturing locations were established in California, Tennessee, Kentucky and Illinois.

6. Architectural acoustics - Wikipedia

   en.wikipedia.org/wiki/Architectural_acoustics

   Interior building surfaces can be constructed of many different materials and finishes. Ideal acoustical panels are those without a face or finish material that interferes with the acoustical infill or substrate. Fabric covered panels are one way to heighten acoustical absorption. Perforated metal also shows sound absorbing qualities. [7]

7. Sydney Airport Air Traffic Control Tower - Wikipedia

   en.wikipedia.org/wiki/Sydney_Airport_Air_Traffic...

   Ceilings in the lobby and stand-down areas are lined with perforated metal acoustic panels with recessed vents and lighting. Paint throughout is generally light-coloured. [1] The cabin, accessed via a carpeted curving staircase, is arranged around a central steel column, from which six cantilevers splay at the top to supports the cabin roof.