Make your home a little more pet friendly! With a Pet One Pet Door, your pet has can come and go as they please. These clever doors are loaded with features, they're built to last – and, best of all, they’re available in a range of different sizes and designs. There’s one for every home…and for every pet, too! Made from 100% polycarbonate for durability and strength Insulated flap is designed to keep warm air from escaping in winter, and cold air escaping in summer Two-way locking system lets you control when your pet is allowed to leave and enter the house Ideal for wooden doors and panels with a maximum recommended thickness of 5.3cm We recommend you weigh your pet and measure their shoulder height before ordering to ensure you’re purchasing a door that’s suitable for your pet Size: Large Recommended for: Dogs up to 25kg Maximum Pet Shoulder Height: 55cm Product Dimensions: 38.5cm wide x 52cm high Entryway Dimensions: 29.5cm wide x 42.5cm high