Features: What an innovative acrylic whelping pen unlike traditional metal or wooden play pen, this fence enables you can see the inside clearly. Upgraded structure, it provides a safe and comfortable place for female dog to deliver baby puppies, with freedom for them to stay and roam around. Featuring an entrance door for easy come and go. Specifications: Type: Dog Pen/ Whelping Box Features: Dog crate, dog pen, whelping pen Suitable for: Training, playing, exercise, whelping Model: 6 Panels Material: Aviation Aluminum Alloy + Acrylic + ABS + PVC Color: Silver + transparent Net Weight: 19.95kg/ 44 lbs Product Dimension: L * W * H 163x102.5x80cm/ 64.17x40.35x31.49 inch Door Opening: L * H 66x63cm/ 25.98x24.8 inch Package Includes: 5 x Playpen Panels 1 x Door Panel 1 x Instruction 1 x Screw Accessory(set) 1 x Waterproof Fertility Pad Note- - Please refer to the measurement. Tiny measuring error is allowable in normal range. - There might be a little color difference due to the monitor,