add-on unit has 2 posts, 4 shelves, and 2 joining clamps per shelf. there’s a $5 charge for more complex props or designs!! properly evaluating a rental requires an on-site inspection. however there are some core values that remain more or less same over the ages. it has plastic coated handles for more natural control. if not, it’s usually a stony silence." we (the international relations office) will only send e-mails to this address after the start of the semester. every place has its own norms and it takes more than a day to understand them. 