Version: May 6, 2013 - Metro Interiors

1 Version: May 6, 2013 ArmstrongItem #NRCROCKFON Item # SizeEdgeNRC 41002' x 2' x 3/4" EqualCERAMAGUARD/CERAMAGUARD FINE 11002' x 2' x 5/8" FINE 11012' x 4' x 5/8" FINE FISSURED (unperforated)605n/aKoral 11012' x 4' x 5/8" 11002' x 2' x 5/8" 11012' x 4' x 5/8" EqualCIRRUS Open 11202' x 2' x 5/8" Open 11212' x 4' x 5/8" Open 11602' x 2' x 5/8" Open 11612' x 4' x 5/8" Open 11002' x 2' x 5/8" Open 11012' x 4' x 5/8" 11202' x 2' x 5/8" EqualCIRRUS 11202' x 2' x 5/8" 11202' x 2' x 5/8" 11202' x 2' x 5/8" 11212' x 4' x 5/8" 11212' x 4' x 5/8" EqualCIRRUS 11602' x 2' x 5/8" EqualCIRRUS 11602' x 2' x 5/8" 11602' x 2' x 5/8" 11602' x 2' x 5/8" 11612' x 4' x

2 5/8" 11612' x 4' x 5/8" EqualClean Room FL/ Clean Room VL & Standard 332002' x 2' x 5/8" Room FL/ Clean Room VL & Call 1-855-330-6878 Clean Room FL/ Clean Room VL & VL1720n/aMedical Standard 332002' x 2' x 5/8" Room FL/ Clean Room VL & VL1721n/aPlease Call 1-855-330-6878 Clean Room FL/ Clean Room VL & VL868n/aMedical Standard 332002' x 2' x 5/8" Room FL/ Clean Room VL & VL870n/aPlease Call 1-855-330-6878 Clean Room FL/ Clean Room VL & Standard 332002' x 2' x 5/8" Room FL/ Clean Room VL & Call 1-855-330-6878 Clean Room EqualClean Room EqualRockfon Cross Reference to ArmstrongVersion.

3 May 6, 2013 Cross Reference GuidePage 1 ArmstrongItem #NRCROCKFON Item # SizeEdgeNRC Clean Room EqualClean Room EqualClean Room EqualClean Room EqualClean Room EqualClean Room 2002' x 2' x 1/2" 6002' x 2' x 5/8" 2012' x 4' x 1/2" 6012' x 4' x 5/8" Call Call 6602' x 2' x 5/8" 6602' x 2' x 5/8" 6612' x 4' x 5/8" 10002' x 2' x 5/8" 10002' x 2' x 5/8" 10002' x 2' x 5/8" 10002' x 2' x 5/8" 10002' x 2' x 5/8" 10012' x 4' x 5/8" 10012' x 4' x 5/8" Call Call Call Call Call Call 10602' x

4 2' x 5/8" 10602' x 2' x 5/8" 10612' x 4' x 5/8" Call 1-855-330-6878 FINE 2002' x 2' x 1/2" 6002' x 2' x 5/8" 2012' x 4' x 1/2" 6012' x 4' x 5/8" Call 1-855-330-6878 FINE 10002' x 2' x 5/8" 10002' x 2' x 5/8" 10012' x 4' x 5/8" 10012' x 4' x 5/8" 2002' x 2' x 1/2" 2012' x 4' x 1/2" Call 1-855-330-6878 Version: May 6, 2013 Cross Reference GuidePage 2 ArmstrongItem #NRCROCKFON Item # SizeEdgeNRC FINE Call 1-855-330-6878 FINE 6602' x 2' x 5/8" 6602' x 2' x 5/8" 6612' x 4' x 5/8" 6612' x 4' x 5/8" Call 1-855-330-6878 FINE Call 1-855-330-6878 FINE 10602' x 2' x 5/8" 10602' x 2' x 5/8" 10612' x 4' x 5/8" FISSURED Open 11002' x 2' x 5/8" FISSURED Open 11012' x 4' x 5/8" FISSURED Open 11202' x 2' x 5/8" FISSURED Open 11212' x 4' x 5/8" FISSURED Open 11602' x 2' x 5/8" FISSURED Open 11612' x 4' x

5 5/8" FISSURED Second EqualFINE FISSURED Second EqualFINE FISSURED Second EqualFINE FISSURED Second EqualFINE FISSURED Second 2002' x 2' x 1/2" 6002' x 2' x 5/8" 2012' x 4' x 1/2" 6012' x 4' x 5/8" 6602' x 2' x 5/8" 6602' x 2' x 5/8" Call 2002' x 2' x 1/2" 2012' x 4' x 1/2" 6012' x 4' x 5/8" 6602' x 2' x 5/8" 6002' x 2' x 5/8" 6012' x 4' x 5/8" 6602' x 2' x 5/8" 6002' x 2' x 5/8" 6012' x 4' x 5/8" 6012' x 4' x 5/8" Zone EqualHealth Zone EqualHealth Zone EqualHealth Zone EqualHealth Zone EqualHealth Zone EqualHealth Zone EqualHealth Zone EqualHealth Zone EqualVersion.

6 May 6, 2013 Cross Reference GuidePage 3 ArmstrongItem #NRCROCKFON Item # SizeEdgeNRC Health Zone EqualHealth Zone Plus 341002' x 2' x 3/4" Zone Call 1-855-330-6878 Health Zone Plus 342502' x 2' x 3/4" 6002' x 2' x 5/8" 6012' x 4' x 5/8" Call Call Call 6602' x 2' x 5/8" 6602' x 2' x 5/8" 6612' x 4' x 5/8" Open 141002' x 2' x 3/4" Open Call 1-855-330-6878 optima Open EqualOPTIMA Open dB 221002' x 2' x 1-1/2" Open 143012' x 4' x 3/4" Open Call 1-855-330-6878 optima Open EqualOPTIMA Open

7 Call 1-855-330-6878 optima Open EqualOPTIMA Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open EqualOPTIMA Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open dB 203002' x 2' x 1" Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open Call 1-855-330-6878 optima Open 145502' x 2' x 3/4" Open EqualOPTIMA Open EqualOPTIMA Open EqualOPTIMA Open EqualVersion.

8 May 6, 2013 Cross Reference GuidePage 4 ArmstrongItem #NRCROCKFON Item # SizeEdgeNRC PAINTED NUBBY Open 101012' x 4' x 3/4" NUBBY Open EqualPAINTED NUBBY Open EqualPAINTED NUBBY Open EqualPAINTED NUBBY Open 10012' x 4' x 5/8" 11002' x 2' x 5/8" 11012' x 4' x 5/8" (unperforated) 6012' x 4' x 5/8" 10002' x 2' x 5/8" 10012' x 4' x 5/8" 6002' x 2' x 5/8" 2012' x 4' x 1/2" Zone FINE 6002' x 2' x 5/8" Zone FINE 6012' x 4' x 5/8" Zone FINE Call 1-855-330-6878 School Zone FINE Call 1-855-330-6878 School Zone FINE 10602' x 2' x 5/8" Zone FINE 10602' x 2' x 5/8" Zone FINE 10612' x 4' x 5/8" Zone FINE 10002' x 2' x 5/8" Zone FINE 10002' x 2' x 5/8" Zone FINE 10012' x 4' x 5/8" Zone FINE 10012' x 4' x 5/8" 6002' x 2' x 5/8" 6012' x 4' x 5/8" 6002' x 2' x 5/8"

9 6012' x 4' x 5/8" Call 6002' x 2' x 5/8" 6002' x 2' x 5/8" 6012' x 4' x 5/8" 6012' x 4' x 5/8" 6602' x 2' x 5/8" 6612' x 4' x 5/8" 101002' x 2' x 3/4" 101012' x 4' x 3/4" Plus 341002' x 2' x 3/4" 103002' x 2' x 3/4" EqualVersion: May 6, 2013 Cross Reference GuidePage 5 ArmstrongItem #NRCROCKFON Item # SizeEdgeNRC 103002' x 2' x 3/4" 103012' x 4' x 3/4" Call Plus 342502' x 2' x 3/4" 10200 ULTIMA High 101002' x 2' x 3/4" Open 10200 ULTIMA Open EqualULTIMA Open 103002' x 2' x 3/4" Open 103012' x 4' x 3/4" 105502' x 2' x 3/4" with AirGuard EqualULTIMA with AirGuard EqualULTIMA with AirGuard EqualULTIMA with AirGuard EqualULTIMA with AirGuard EqualULTIMA with AirGuard EqualVersion.

10 May 6, 2013 Cross Reference GuidePage 6 CertainTeedItem #NRCROCKFONItem # SizeEdgeNRC dB 221002' x 2' x 1-1/2" dB 223002' x 2' x 1-1/2" Call dB 221002' x 2' x 1-1/2" dB 223002' x 2' x 1-1/2" Call EqualAdagio High CACHCAC dB 231002' x 2' x 2" High CACHCAC dB 233002' x 2' x 2" High CACHCAC Call 1-855-330-6878 Adagio High CACHCAC EqualAdagio High CACHCAC EqualAdagio High CACHCAC EqualAdagio High CACHCAC dB 231002' x 2' x 2" High CACHCAC dB 233002' x 2' x 2" High CACHCAC Call 1-855-330-6878 Adagio High CACHCAC EqualAdagio High CACHCAC EqualAdagio High CACHCAC EqualAquarock1182-CRF-1n/aKoral 11002' x 2' x 5/8" 11012' x 4' x 5/8" Focus Dg3542 145502' x 2' x 3/4" Focus Dg3542 EqualEcophon Focus Ds3542 146002' x 2' x 7/8" Focus Ds3542 EqualEcophon Hygiene3513 Plus 341002' x 2' x 3/4" Hygiene3513 Call 1-855-330-6878 Ecophon Hygiene3531 7031No EqualEcophon Hygiene3513 Plus 341002' x 2' x 3/4" Hygiene3513 Call 1-855-330-6878 Ecophon Hygiene3542 Plus 341002' x 2' x 3/4"