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S3B - Base School Bus Seat

39 In S3B Restraint With Belts

S3B Seating System
is a light weight economical school bus seating system. The S3B was designed for applications where upgrading to a lap / shoulder or ICS configuration is not anticipated. It has the same footprint as the S3C and can be mixed and matched with S3C Convertible Seats in the same bus.


  • Available in two configurations: Lap Belt Ready or Equipped with Lap Belts
  • 26", 30", 36", 39" and 45" widths
  • Same footprint as S3C Seats – Mix and match with S3C seats in the same bus
  • Available in Wall / Floor / Track mount configurations
  • Meets all FMVSS / CMVSS requirements
  • Most economical base school bus seat

ONE DEPENDABLE SUPPLIER – SynTec Seating Solutions

For more information about our Base School Bus seat, or any of our other innovative seating solutions, please contact us.

Maintenance Benefits

  • Square tube construction provides maximum durability
  • Self-latching seat cushion can be removed or replaced in seconds

Standard Configuration

  • 39″ Restraint FMVSS / CMVSS 222 compliant convertible school bus seat
  • 42 oz. vinyl upholstery
  • Same footprint a S3C Seating System

Optional Configurations

  • Lap Belt Ready
  • Lap Belt equipped
  • Flip Seat
  • Davenport Seat
  • 26″, 30″, 36″, 39″ and 45″ widths



  • Color Options: Green / Blue / Grey
  • Material Options: 42 oz. / Kevlar / Fireblock
  • Side: Left Side, Right Side
  • Mount: Wall Mount, Floor Mount, Track Mount
  • ISO: ISO Lower Anchors and Tethers for Children
  • Lap Belts: Colored