Rite Farm Products strong, washable poly Quail, Pigeon, Dove & Bird 1 hole feeder. Unit mounts with 2 hangers to the exterior of any cage, making it a breeze to fill from the outside. Clear plastic feed door hinges open from the outside for easy filling. Each feed slot holds approximately 1 pint of feed making it a 1-pint feeder in total. Feed openings are 1.8 inches wide by 2.8 inches tall. Better than rusty metal feeders and costs a lot less! Made high-density, impact-resistant polypropylene that will not rust, rot, or corrode. Easy to keep clean plastic surface. Outside measurements are 4 inches wide by 4.5 inches deep by 5.7 inches tall.