alp 4D CONCEPTS INDUSTRIAL COLLECTION MODEL:183301 NEED ASSISTANCE ? Call 4D CONCEPTS directly for parts or assembly assistance. Individual stores do not stock parts Call our Toll-free number 5 days & week except holidays: Monday through Friday 8.00am to 5.00pm Pacific Standard Time WHEW. CONCEPTUALIZE. COM 1-888-310-4DC0O or 1-888-310 4326 IMPORTANT: Before tailing please have the model number and the packing code number ready for our customer service representatives.