This is expandable unlimitedly as Lego block.
Price indicated is per piece (one panel).
Connecting parts are leakproof.
Product Dimensions
1 Panel: 26 x 17.7 x 1.4 inches.
2 Panels: Total 35.4 x 26 x 1.4 inches.
3 Panels: Total 53.1 x 26 x 1.4 inches.
This product is suitable for large size dogs up to 60 kg.