ET-155 Lens Hood (WII). Package Size Length (in.): 40.00 Width (in.): 25.00 Height (in.): 19.50 Weight (lbs.): 46.94 Product Features CONTEMPORARY: With clean... Fits to the front of the EF 400mm f/2.8L IS II USM lens, reducing 'flare' caused by light shining directly on the lens' front element. Features Compatibility EF 400 f/2.8L IS