14141 5/8" SPREADER BAR 72" WHIT | Prime-Line 5/8 in x 5/16 in 0.025 roll formed aluminum spreader bar is typically used on larger screens in excess of 48 in. The spreader bar is mounted across the center of the screen and prevents the side of the screen from bowing in. This features helps eliminate wrinkles in the screen fabric. The spreader bar is attached to the screen frame on each side with clips secured in the spline channel.