The dwht43248 is a precision-engineered 48″ box beam level built for professional trades with heavy-duty aluminum construction and a robust box profile thats five times stronger than standard frames. Featuring three solid block vials delivering 0.0005in/in accuracy, plus a magnified bridged center vial housed in die-cast metal for maximum stability. With over-molded metal end caps and hand holes for portability, this magnetic level tool (non-magnetic in this version) sets a new standard in durability and layout accuracy.