This sturdy window perch features a patented clamping option that lets you mount the perch securely without putting screw holes into woodwork. The machine-washable, faux fleece cover is supported by soft foam padding. The low-voltage warmer provides safe, gentle heat, and its cord routes through the perch supports. The warmer can be removed for summer use. Not LOCKNDRY compatible. Screw and Velcro® mounting options are also included. 6-foot cord with anti-chew protection.