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3. Wheels: Two (2) wheels with self - lubricating bearings with a minimum load rating of 120 <br />lbs. per wheel. Wheels shall be attached to the axle via a tamper resistant snap -on method <br />which contains no metal components. No cotter pins, 'Pal nuts" or similar restraining <br />devices shall be utilized to attach the wheel. All wheels shall be 1.75 inches wide. Wheels <br />shall be easily removed for replacement with a non - commercially available tool. <br />Wheel Sizes: Size A: <br />8 inches <br />Size B: <br />10 inches <br />Size C: <br />12 inches <br />4. Axles: Axles shall be solid steel and electro - plated with black zinc for durability and long <br />life. Carts should be designed in such a way as to prevent the axle from popping out. An <br />axle, which is only press fitted and not secured in some additional manner will not be <br />acceptable. <br />Axle Sizes: Size A: <br />5/8 inch <br />Size B: <br />6/8 inch <br />Size C: <br />7/8 inch <br />5. Lids: Lids shall be molded of the same material as the cart body and shall be permanently <br />attached to the cart body with plastic hinge(s). Metal fasteners are not acceptable. Lids <br />shall be watertight and slightly domed to facilitate run -off of rainwater. The lid shall be <br />designed to fold over parallel to the back side of the cart when fully opened. Lids shall be <br />factory assembled. <br />6. Locking Bar: The semi - automated lifting area shall be integrally molded with the body of <br />the cart. The locking bar shall be able to rotate a full three - hundred sixty (360) degrees and <br />shall be constructed of zinc - coated steel to prevent rust and corrosion. Plastic locking bars <br />are unacceptable. <br />7. Certification by a certified independent laboratory shall be required of the following <br />minimum standards and quality assurance measurements: <br />7.1 Drop Impact Test - material and weight shall be cold soaked at a temperature of not <br />less than -20 F for 24 hours and dropped within 60 seconds of leaving the cold <br />chamber. Carts shall remain watertight after a minimum drop height of 15 feet. <br />Test loads are as follows: <br />Size A: 120 lbs. distributed <br />Size B: 160 lbs. distributed <br />Size C: 180 lbs. distributed <br />