acoustical insulation board

acoustical insulation board

[ə′küs·tə·kəl in·sə′lā·shən ‚bȯrd]
(materials)
A porous board]] designed or used for acoustical applications or for sound-insulating construction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

acoustical insulation board

A porous material in board form, designed or used as an acoustical material or as an element in a sound-insulation construction.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.