Ideal Pet Products Aluminum Sash Pet Door 27" Waste Management Multiple feeders also can be

Multiple feeders also can be controlled from one smartphone

Your dog wears a collar that picks up the signal from the transmitter

Helps to reduce the stress on fish as they become familiar with their new environment

Charge your pet's receiver collar when the battery's low and away he goes to enjoy his new yard freedom

2-hour rapid charge Lithium Polymer batteries

Ideal Pet Products Aluminum Sash Pet Door 27" Waste Management Multiple feeders also can beHigh quality white finish aluminum construction. Installs easily into most styles of aluminum sash windows. Features: Size: Small Dimensions: 1. 75" x 27" x 12. 56" For pets 2 12 lbs. Flap size 5" x 7" Adjustable width from 27" 32" Size: Medium Dimensions: 1. 63" x 27" x 16. 63" For pets 13 35 lbs. Flap size 7" x 11. 25" Adjustable width from 27" 32" Size: Extra Large Dimensions: 1. 75" x 27" x 20. 63" For pets 36 90 lbs. Flap size 10. 5" x 15"