MBG531–00AMERICANNATIONALSTANDARDANSI/NAAMMMETALBARGRATINGMANUALSIXTHEDITION•MaximumBearingBarDepth...21/2(63.5mm)•MaximumBearingBarThicknessSteel&StainlessSteel.......3/16(4.8mm)Aluminum..................1/4(6.4mm)•MaximumDepthofI-Bar.......21/2(63.5mm)MBGMetalBarGratingDivisionofTHENATIONALASSOCIATIONOFARCHITECTURALMETALMANUFACTURERSANSI/NAAMMMBG531-00February21,2001GRATINGS5ANSI/NAAMMMBG531-00February21,2001GRATINGS5