ROCKWOOL CMFRT R15 3 1/2X23"60sf
ROCKWOOL SAFE SOUND 3"X15" 59sf
ROCKWOOL CMFRT R23 5 1/2X23"37sf
ROCKWOOL CMFRT R38 9.5"X23"22.5s
ROCKWOOL CMFRT R23 5 1/2X15"39sf