This un-heated bird bath features a tilt-to-clean deck mount.  The bowl dimensions are 20" diameter x 2" deep. The rim is specially designed to be easily grasped by a bird's feet, making it a natural bird perch, and thereby encouraging bird landings. Includes mounting bracket that firmly attaches to your existing deck rails.   This simple but durable mount firmly attaches the bird bath to deck rails. Its unique design easily tilts and lifts for cleaning or storing of the bath. Simply undo the catch and tilt the bird bath up for cleaning and draining, or lift straight up to remove the bowl completely.