• Pet door designed to provide autonomy and freedom of movement for medium and large breed dogs. • 2-option system including a metal back panel to completely block access and increase security. • Highly durable flexible and transparent flap resistant to frequent use and weather conditions. • Includes an adjustable depth tunnel that protects the structure against moisture and wind. • Structure made of high-quality plastic with a reinforced frame for greater stability. • Suitable for installation in wooden doors and walls. • Size M-XL ideal for pets weighing up to 43 kg.