3M/Unitek/Metalcraft

Martinez Dentalcraft and Equipment, Inc. Now handles the equipment made by 3M/Unitek/Metalcraft, including the Design Line 300 and the Design Line 300 A Operatory Chairs and the Grammar Ergo Stools. Parts for these and all other 3M.Unitek/Metalcraft equipment is limited so please call us at (817) 927-5498 for information regarding pricing and availability. We are doctor direct so if you are a technician please have the doctor or their office contact us.

Design Line 300 Cushions

D.L. 300

Prices : Vinyl/Fabric
Headrest: $97.19/$102.30
Arm Pad: $81.84/$84.91 (each)
Seat Assembly: $301.79/$309.97
Back Assembly: $246.54/$279.28
​Complete Set: $741.68/$767.25

D.L. 300A

Prices : Vinyl/Fabric
Headrest: $97.19/$111.51
Arm Pad: $86.96/$91.05 (each)
Seat Assembly: $334.52/$338.61
Back Assembly: $291.56/$309.97
​Complete Set: $777.48/$808.17

Listed below are items that aren't highly limited in stock or availability. ​

  • Design Line 300/300A Motor Gear Box Assembly
  • Back Switches for the Design Line 300/300A
  • Limit Switches for the Design Line 300/300A
  • Wire Harnesses 
  • Call for information on any other equipment