The best heavy-duty tarp option we have available for the 16 foot x 8 foot bed on your CHN Mack Dump Truck is with the Erickson Industrial-Grade # EM57045. This tarp measures 10 feet wide and 18 feet long which will give you a bit of slack to work with at each end of the bed. The integrated brass eyelets and steel D-rings that run along the outer edges of the tarp will allow you to tie the tarp down and secure it in place on your dump truck. view full answer...