Upgrade your Freightliner Classic 2003 and older model with the 43-inch stainless steel monster battery box lid. Constructed with durable 304-grade stainless steel, this lid measures 21 by 33 by 31 inches and is sold individually. Its 14-gauge construction ensures a secure fit for most Freightliner Classic 2003 and older models. Enhance the practicality and longevity of your battery box with this high-quality lid, designed to withstand the demands of heavy-duty use.