A squirrel's weight closes the seed port. Single-sided feeding for best close-to-home viewing. Adjustable weight settings allow feeding only smaller birds, if desired. Unique TopLoc roof lifts for easy filling and locks securely to prevent squirrel access. Hang or pole mount (hanger and pole included). Capacity: 2.5 gallons (approximately 15 lb.). Weather-resistant, powder-coated steel body. From WoodLink.