• be constructed out of rigid plastic and airline approved. No cardboard, collapsible, foldable or soft-sided kennels. No all-wire cages.No kennels with top-side door.
• have functional handles on the kennel's exterior to prevent tilting and any direct contact with the animals.
• close securely, but not lock, allowing personnel to open it in case of emergency
• have labels with the words "Live Animal" in letters at least 1-inch tall on the crate's top and on at least one side.
• have upright arrow labels indicating kennel's correct position.
• contain some type of bedding, either shredded paper or towels, to absorb any "accidents."

Kennel Type Outside Size (Inches) Actual  Weight Volume Weight Maximum Animal Weight Small 100 series 21 x 15 x 16 6 lbs. 26 lbs. 18 lbs. Medium 200 series 27 x 20 x 19 12 lbs. 53 lbs. 25 lbs. Medium 300 series 32 x 22 x 23 18 lbs. 84 lbs. 40 lbs. Large 400 series 36 x 24 x 26 24 lbs. 116 lbs. 70 lbs. X-Large 500 series 40 x 27 x 30 31 lbs. 167 lbs. 120 lbs. XX-Large 700 series 48 x 32 x 35 51 lbs. 277 lbs. 190 lbs.