Square tubing is typically called box section, square tube or square plastic tube, describing its four-sided, box-like shape.
These plastic tubes have a box-like cross-section with four flat sides and right-angled corners. While often called “square,” some of these profiles could be rectangular and vary in width and height. The naming convention typically refers to the general shape rather than exact proportions. At MKM Extrusions, plastic square tubing is made from rigid PVC and is available in the colours black or white as standard. The range includes both square and rectangular sizes. These profiles can be used in many ways, depending on the project. Custom sizes and colours may also be possible for larger orders subject to review by our technical team.