This cover and frame assembly protects the spreader’s hopper opening and metering components from debris and moisture when the machine is not in use. It mounts directly over the hopper top, with the frame providing rigidity to keep the cover taut and prevent sagging. A secure seal around the perimeter helps keep fertilizer dry and free-flowing. Over time, UV exposure and repeated handling can cause the fabric to stiffen or tear, reducing its ability to shed water. Replacing the assembly restores full coverage and prevents contamination of the stored material.