Marine Metal Aeratr Bubble Box 1.5V Pumps 1.4 STL / minute Designed for fresh and saltwater use Space saver clam shell package 4"W x 7.5"Lx 2"D Pumps 1.4 STL/minute Designed for fresh and saltwater use Space saver clam shell package 4"W x 7.5"Lx 2"D