5 in. x 4 ft. EZ Smooth Flow Gutter Cover (50-pack)E Z Smooth Flow is an effective and simple to install powder coated aluminum gutter guard which recesses into the gutter and fastens to the front with stainless steel screws (provided). The rain passes through canals fills with thousands of holes, making it easy for air flow. The debris can then dry and blow away. Made for K style gutters. The black color can help snow and ice melt faster from gutters. Maximum debris load Fastens to the front with