Answer: asb

AnswerCrossword Clue
ASBOld fireproofing material (abbr.)
ASBControversial fireproof material: Abbr.
ASBFireproofing prod., now banned
ASBOld curtain material: Abbr.
ASBFireproofing substance: Abbr.
ASBFireproof material: Abbr.
ASBFireproofing: Abbr.
ASBMineral fiber: Abbr.
ASBCurtain material: Abbr.
ASBFireproof stuff: Abbr.
ASBKind of curtain: Abbr.
ASBFire retarder: Abbr.
ASBBanned weatherproofer: Abbr.
ASBOld insulating mat'l.