Yes, we make a box wedge splitter, but it is built differently than our most popular models.  Box wedges create a lot more scraps than our star shaped wedges. Putting a log with a circular grain pattern thru a square box blade creates this extra mess. Box wedges also require more tonnage and add more wear and tear on the machine due to shearing thru the logs unnaturally.  Our standard box wedge is 3.5 x 3.5 inch square.  We have other sizes available.  Please visit our “Horizontal Splitters” section and click on Box Wedge Machine for more info.