Triangle 300 Interested? Please Contact us All volumes can be bolted on or screwed on, are made of 13 layer ¾ inch (18 mm) high-quality birch plywood, and coated with our special Blocz Texture. - Smallest Blocz volume - Stacks well on other volumes - Low profile volume (great for slabs and vertical walls)- Symmetrical volume- Bomber T-nuts (metric T-nuts available upon request) Length 12 inches Height 4.5 inches T-nuts 3 Design options