Two-Way Dog Door with Flap 12 x 14.75 in.

Updated September 2, 2026

Brand: TRIXIE Model: 3879 Retail Price: $37 If you want to give your furry friend the freedom to go outside whenever they want, then this pet door is perfect for you. With a durable plastic frame that can accommodate medium to large dogs, you can be sure it will last. The flexible transparent flap and the sturdy metal bar at the bottom ensure the flap closes silently every time. Use the removable and lockable metal panel to control your pet's access and prevent unwanted animals from entering your home. The paintable plastic frame of the door can be matched to your door's existing color, ensuring that it blends in with your home seamlessly. This pet door is designed for easy DIY installation and works with interior or exterior wood, PVC, metal, and paneled human doors up to 1.25 inches thick. Features: Lockable Flap/Panel. Hub Required: No hub connection available. Lockable Flap/Panel: Yes. Maximum Pet Weight (lb.): 70. Pet Door Mount Type: Door Mount. Pet Door Opening Width (in.) x Height (in.): 12.1 x 14.9. Pet Supplies Product Type: Pet Door with Insert Frame. Type: Pet Door with Flap. Door Thickness (In.): Max Thickness 1 3/4 Inch. Product Depth (in.): 2 in. Product Height (in.): 17.7 in. Product Width (in.): 15.4 in. Maximum Pet Weight (lb.): 70. Pet Door Mount Type: Door Mount. Pet Door Opening Width (in.) x Height (in.): 12.1 x 14.9. Features: Lockable Flap/Panel. Pet Supplies Product Type: Pet Door with Insert Frame. Disclaimer : DISCLAIMER: This listing contains a stock image of the item to be auctioned, in order to illustrate the item’s design and functionality when new. However, this stock image is provided for ILLUSTRATION PURPOSES ONLY and cannot be relied upon by any bidder. Instead, actual photos of the specific item up for auction are provided within the gallery. Any written overview regarding features, operations, or capabilities reflects the item’s original specification when new and does not guarantee current condition or complete performance. The absence of any description by Rockey Auction of the item to be auctioned does not establish an implied representation that it is new or functional. It is a bidder's sole responsibility to inspect all actual product photos, read descriptions carefully, and perform any desired pre-bid inspections or inquiries. Bids placed constitute full acknowledgment and satisfaction with the item's condition along with Rockey Auction’s terms AND CONDITIONS of sale, which can be found in full in the tab below.

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