There are two fields on the shopping cart page. Enter discount codes and coupon codes in the "COUPON?" field. Enter gift card codes into the "GIFT CARDS" field. Be sure you're using the right field for the right code. Multiple gift cards can be used with one order. Simply add each one into the entry box, submit, and then enter the next.
WARNING: HYDRAULIC AND PNEUMATIC POWER SYSTEMS CAN FAIL THROUGH MISUSE, AGE OR MALFUNCTION. THE SYSTEM DESIGNER
IS WARNED TO CONSIDER THE FAILURE MODES OF ALL COMPONENTS USED IN THE DESIGN AND ENGINEERING OF ALL SYSTEMS AND TO PROVIDE ADEQUATE
SAFEGUARDS TO PREVENT PERSONAL INJURY OR DAMAGE TO EQUIPMENT IN THE EVENT OF SUCH FAILURES