Columbia 14" Automatic Assist Flat Box


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*Within the continental USA


Columbia's 14” drywall flat box is designed to apply joint compound to butt joints and bad flat joints, giving you more feather than traditional 12" flat boxes.


  • Automatic Assist springs that take wear and tear off your shoulders
  • Hinged door allows the flat box to open wide for easy clean up
  • Bead wheel protects axle from wear while running box on bead
  • Fits most style flat box handles
  • Hand made from U.S. billet aluminum and steel components
Also compatible with: 
 ✓ NorthStar™ 
 ✓ TapeTech®  
 ✓ Drywall Master  
 ✓ BlueLine  
 ✓ Concorde  
 ✓ TapeMaster®