TPC4x6, reversible box;
available space inside 171.4mm x 104.7mm x 64.7mm (6.75” x 4.125” x 2.55”) 
wall thickness 23mm

TPC521, reversible box
Available space inside 132mm x 58.4mm x 40mm (5.1” x 2.2” x 1.5”)
Wall thickness 9.1 mm, crush ribs will compress to provide snug fit

TPC531, reversible box
Available space inside 132mm x 95.2mm x 40mm (5.1” x 3.75” x 1.5”)
Wall thickness 9.1mm, crush ribs will compress to provide snug fit

TPC531, reversible box
Available space inside 132mm x 95.2mm x 40mm (5.1” x 3.75” x 1.5”)
Wall thickness 9.1mm, crush ribs will compress to provide snug fit

TPC554 deep box with flat lid,
available space inside 139.7mm x 101mm x 71mm (5.5” X 4’ X 2.8”)
wall thickness 13mm

TPC561, reversible box
Available space inside 171.5mm x 117.5 x 93.9mm
Wall thickness 9.5mm

TPC562 reversible box
available space inside 154.4mm x 127mm x 50.8mm; (6” x 5” x 2”)
25.4mm wall thickness