These sturdy hinged heavy-duty poly lids offer excellent protection for either poly or bushel truck contents. The lids feature a center opening stainless steel hinge that allows you to load or unload without having to remove the lid. By being able to access the lid from either end it makes it a very convenient option. Simply raise the lid from either end of the truck and toss in the laundry or other contents and simply close the lid - it�s that easy.