Letter of reference from Kimbertal Kennels
I am happy to give my testimonial for these dog doors. What a terrific product! These truly are the best dog doors. I have personally used the BiteGuard KennelPlex model BG1825 in my home for 11 years. The door just keeps on performing. Great energy efficiency, good looks, and it has stood up to the righteous use of my 120 lb, 32" tall Doberman. He had no trouble learning to use it.
I have been involved with dogs in breeding and boarding for more than 40 years now. My experience in breeding Dobermans and Rottweilers gives me firsthand knowledge of how hard an active large breed dog can be on equipment. I don't hesitate to say that the BiteGuard KennelPlex stands up to the large breed dogs.
Robert G Yarnall, Sr.