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.

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.