Littermaid LME9250 LitterMaid Elite Mega Advanced Litter Box Unit automatically rakes waste into sealable container minutes after use. Detects when cat exits the unit, activating the ionic air cleaner until the rake cycle has ended. Rake is at rest for 9 hours, then ionic air cleaner cycles on for 10 minutes every hour to freshen the air. Ideal for large and/or multiple cat households. Automatically stops and reverses the cleaning rake at the slightest touch. Kitty Kabana: Keeps litter contained and provides privacy for your cat. Easy to clean Exterior Dimensions: 31"L x 19"W x 9"H - w/o ramp. Interior Dimensions: 12"L x 13.5"W x 1.5"H - litter area.