K&H Kitty Sill - EZ Window Mount??? The K&H Kitty Sill - EZ Window Mount??? is an easy-to-install, versatile window sleeper. Twi push 'n turn suction cups and two giant push cups provide the ultimate in strength. Each suction cup holds in excess of 100 pounds, yet is still easily removable for cleaning. The exclusive design allows for window blinds, curtains, and shades to operate normally. Features: Exclusive design allows for window blinds, curtains, and shades to operate normally Giant push 'n turn suction cups provide incredible strength Allows use of window blinds, curtains, and shades when folded Removable, washable cover One year limited manufacturer's warranty Item Specifications: Assembled Dimensions: 12L x 23W KH9091 655199090914