1. Interior has no sharp points, edges, or protrusions that could injure an animal.

  2. Each animal is securely contained in the enclosure and cannot put any part of its body outside the enclosure in a way that could result in injury to itself, handlers, or other persons or animals.

  3. The openings of the enclosure are easily accessible at all times for emergency removal of the animals.

  4. Unless the enclosure is permanently affixed to the conveyance, adequate handles or handholds should be present so that it can be lifted without tilting and ensure that anyone handling the enclosure will not come into physical contact with an animal that is inside.

  5. Unless the enclosure is permanently affixed to the conveyance, labeling on the top and at least one side with the words “Live Animals” in letters at least 1 in. high and arrows indicating the correct upright position of the enclosure must be present.

  6. Any material or treatment in or on the enclosure must be nontoxic.

  7. A solid, leakproof bottom or removable leakproof tray under a slatted or mesh floor that prevents seepage of waste products from the enclosure is required. The slatted or mesh floor must be constructed so an animal cannot put any part of its body through the raised floor. Unless it is on a raised floor, the enclosure must contain enough unused, nontoxic litter to absorb and cover excreta.

  8. Food and water receptacles must be attached inside the enclosure and placed so that they can be filled from outside the enclosure without opening the door.

  9. The primary enclosure must be cleaned and sanitized before each use. If an animal is in transit for more than 24 hr, the enclosure must be cleaned and litter replaced or the animal moved to another clean and sanitized enclosure. If moving an animal from the enclosure is necessary, this procedure must be completed in a way that safeguards the animal from injury and prevents escape.

  10. Projecting rims must be on the exterior of walls that contain ventilation openings and provide a minimal air circulation space of 0.75 in.

  11. The size and arrangement of ventilations openings must comply with one of the following options:

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