Columbia 10" Drywall Flat Finishing Box is the most common selling size of flat box for the first coat, in the US market. It works great for running flat joints and butt seams. Easy...
The Columbia 12" Drywall Flat Finishing Box is a high-quality tool for quickly and efficiently finishing drywall surfaces. Made from durable materials, this finishing box is built to withstand...
Columbia Drywall Taping Tools 8” Flat Box is the perfect sized box for base coating taped seams. This new 8" Columbia box has many new improvements including the "No Swell" rubber gaskets,...
Columbia 5.5" Drywall Flat Box is the perfect box for getting into those tight areas. It will fit on all major brands of flat box handles. Well-built and fine-tuned to offer...
Need a larger, stronger box with greater mud capacity for loading flats and butts? We are proud to meet your needs with the Columbia 14" Flat Box. This is the largest flat box...
