Clipper Hopper BrushClipper hopper brush for roll feed brush hoppers and cotton seed hoppers. Dimensions: 52 long X 1. 5 wide X 4 high If buying this brush for a number 8 series cleaner, no modification is necessary. If buying this brush for a number 7 or 9 series cleaner, the brush will need to be cut down to the right size by the customer. If buying for a cotton seed hopper, 2 brushes will need to be purchased because the hopper is designed with both a front and a back