Professional Acoustic Foam (12 Pack Kit) - White Wedge 4" 12" X 12" Covers 12sq Ft - Soundproofing/blocking/absorbing Acoustical Foam - Made in the Usa! 12 Pack Special! 4" Thick x 12" x 12" IVORY Color - Covers 12sq Ft High NRC Rating of .87 Excellent for Low thru Mid and High Freq's Made in the USA! Meets ASTM E84 Class A and California 117 flame retardant specifications