Zero Clearance Grate Stock Code Size Weight Finish 18603 Front 22.5" Back 16.5" Bars 6 19.4 lbs Matte Black 18604 Front 27.5" Back 22" Bars 8 26 lbs Matte Black 18609 Front 18.5" Back 14.5" Bars 6 16 lbs Matte Black 18610 Front 22.5" Back 18.5" Bars 7 18.7 lbs Matte Black