Strong, washable poly 2 hole feeders.  2 feeding openings allows for 2 birds to eat at the same time, without the mess or fight.  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 2 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 7 inches wide by 4.5 inches deep by 5.7 inches tall.