The E-Series. One of most versatile, all-around lighting solutions, and recent enhancements in LED technology delivering up to 111% more raw lumens than ever before with the E-Series PRO. Among RIGID's most popular product lines, the E-Series PRO has recently benefited from several upgrades to improve both looks and performance. The E- Series, now features a new 2-piece housing that is stronger, more durable and features an improved cooling system. 2-Piece housing are Torture Tested & Approved! With user serviceable mounting hardware and additional mounting bosses on the bottom and an integrated deutsch/amp plug, it makes this new 2-piece housing a more reliable sealing surface for you LED Light Bar.