Description
MOST SECURE PET DOOR | DURABLE HINGED FLAPS
The newly crafted MaxSeal® PRO pet door for doors showcases the latest design and features available in pet doors today. Among the new features is a metal 1″ insulated interior security panel that offers the highest level of security for any pet door when locked. The flaps of the MaxSeal® PRO are equipped with a distinctive aluminum hinged connection that enables the flap to swing more freely, while also preventing pinching when larger dogs use the pet door. This design ensures that your flaps will last significantly longer before needing replacement. Additionally, the MaxSeal® PRO provides one of the best warranties on the market, covering both the door and the flaps for up to 6 years against defects.
All Security Boss products are custom built to order.
The MaxSeal® PRO pet door is constructed from high-quality aluminum that is inherently resistant to rust. This door is designed not only for longevity but also to maintain an attractive appearance throughout its lifespan. The robust piano-hinged vinyl flaps are treated for UV protection and weatherproofed to avoid issues such as shrinking, cracking, discoloration, and warping. Many flap brands fail to withstand harsh conditions, including direct sunlight, extreme temperatures, and excessive use. Staggered stainless steel strike plates are securely riveted to the sides and bottom of the flap, linking to strong embedded magnets within the aluminum frame, thereby creating an outstanding air seal.
The Best Pet Doors by Design™
The MaxSeal® PRO features a standard hinged flap that effectively doubles its lifespan. When paired with the metal-clad security cover, it creates the perfect pet door!
Note: Existing MaxSeal® Customers can Upgrade their MaxSeal models by purchasing the interior security panel and the hinged replacement flaps for their size of door. Call us if you would like any assistance.
Important consideration regarding Security Cover Slide direction

For the Security Cover to function effectively, it needs to be able to move freely without any obstructions. To ensure optimal performance, it is essential to maintain a minimum clearance of 1/2″ above the pet door. Occasionally, a trim piece or other obstruction may prevent achieving this required clearance. In such situations, it is advisable to order the pet door with a “side slide” (side sliding security cover) or a spacer. If you believe this is necessary, please reach out to us, and we will provide you with our recommendations.
| Flap Size WxH (inches) | Minimum Rough-Cut Cut in Door (wxh) | Exterior Frame (overall frame size) (w x h) | Single Flap Model Shipping included! | Dual Flap
|
| Small 6″x 7 1/2″ | 8 1/8″ x 9 5/16″ | 9 3/8 x 10 9/16″ | 286 | 323 |
| Small/Medium 7″x 9″ | 9 1/8″ x 10 13/16″ | 10 3/8 x 12 1/16″ | 328 | 370 |
| Medium 9″ x 12″ | 11 1/8″ x 13 13/16″ | 12 3/8 x 15 1/16″ | 388 | 430 |
| Large 11″ x 16″ | 13 1/8″ x 17 13/16″ | 14 3/8 x 19 1/16″ | 451 | 503 |
| Tall 11″ x 20″ | 13 1/8″ x 21 13/16″ | 14 3/8 x 23 1/16 | 531 | 567 |
| Tall Grand 11″ x 25″ | 13 1/8″ x 26 13/16″ | 14 3/8 x 28 1/16″ | 553 | 646 |
| XL Grand 12″ x 24″ | 14 1/8″ x 25 13/16″ | 15 3/8 x 27 1/16″ | 618 | 696 |
| Wide Tall 15″ x 20″ | 17 1/8″ x 21 13/16″ | 18 3/8 x 23 1/16″ | 672 | 756 |
| Mammoth 15″ x 24″ | 17 1/8″ x 25 13/16 | 18 3/8 x 27 1/16 | 709 | 787 |
| Behemoth 15 3/4″ x 32″ | 17 7/8″ x 33 13/16″ | 19 1/8 x 35 1/16″ | 754 | 854 |









