Fits the following MIDMARK-RITTER Autoclaves:
M9-001 thru -019, M9D-001 thru -019
M11-001 thru -019, M11D-001 thru -019
M9-020 thru -022: Serial Numbers V2200 thru V1464209
M9D-020 thru -022: Serial Numbers V2200 thru V1464209
M11-020 thru -022: Serial Numbers V2200 thru V1479340
M11D-020 thru -022: Serial Numbers V2200 thru V1479340