The difference lies in the cross-section: square tubes have equal sides, while rectangular tubes have differing widths and heights.
Both are hollow profiles with four flat sides and right-angled corners. The key difference is that square tubes have the same width and height, while rectangular tubes do not. Despite this, at MKM Extrusions both shapes are referred to as square tubing, based on the overall style of the profile. All profiles in this category are made from rigid PVC and are available in the colours black or white. Custom dimensions and colours may be possible for larger orders subject to review by our technical team.