Specifications include, but are not limited to: 1. Compact battery powered riding auto-scrubber, seated operator type. Scrub path size to be 26” disk (2 x 13” disk) with adjustable pad pressure up to 150 lbs. minimum, user selectable. Pad drivers are included with the machine. The pad pressure setting must include a ‘lock out’ feature for management control of this adjustment. Scrub disk motors (2) are to be .75 HP with disk brush speed to be 300 rpm. 2. The machine cannot exceed 48” in length. 3. The drive system is to be all-geared (no chain drive) and .75 HP or greater. 4. The rear squeegee assembly is to be 30” “fixed” (not swing style) with break-away mount. There must be a steel, flip-up type bumper to protect the squeegee assembly from impact damage during use. 5. Chassis construction to be of 1/8” steel or greater and is coated against corrosion. The front of the chassis must include urethane bumper “tower style” rollers on each corner to protect against collision.