Flat Finishing Boxes

Flat Finishing Boxes

These apply mud over taped joints on walls and ceilings. Our boxes are made of superior-quality, long-wearing alloys and will last a long time. Use the 7” size for your bed coat, 10” box for your finishing coat, and 12” box for the skim coat. A single, interchangeable handle can be used with all three boxes (also interchangeable with all the major brands). Fill the boxes with the loading pump and filler adapter to minimize time and mess.


  • Only standard size flat finishers to still use the original stainless steel tie rod design.
  • Highest level of interchangeability for easy access to parts.
  • Quick release door latch for ease of cleaning.
  • Finished with the highest quality anodized aluminum to withstand wear from jobsite elements.
  • 5.5", 7", 10", 12", 14"

Product Numbers

5.5" Flat Finishing Box
7" Flat Finishing Box
10" Flat Finishing Box
12" Flat Finishing Box
14" Flat Finishing Box
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