Guard Dog Pet Door Large Size, Lockable, Weatherproof, Flush-Fit Design
- In stock, ready to ship
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The Pet Door for Pets and Their Owners
Easy pet access meets ultimate home security.

🐾 Why Choose Guard Dog?
- 🐾 Secure: Reinforced locking panel with hardened steel throw
- 🐾 Simple: Lift-off hinge panel with easy turn lock
- 🐾 Sustainable: Made partly from recycled materials
- 🐾 Energy Efficient: Insulated flap + magnetic weather seals
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🐾 Code Compliant: Meets Florida Building Code FL40116-R1

📐 Large Size Specifications
- Made to fit flush or 2-panel doors
- Lexan pet flap: 10-1/4″ W × 15-3/4″ H
- Cutout size: 13″ × 18-3/8″
- Installation height: 6″–12″ from bottom of door
- Recommended for dogs up to 100 lbs
🔒 Locking Security Panel Details

Hand turn lock with a hardened steel throw is simple and easy to operate.
The Guard Dog security panel mounts with two lift-off hinges and can be removed when unlocked, yet stays resilient when locked closed.
For use in doors smaller than 3’ wide and ideal for homeowners who keep the flap open most of the time.
The lightweight Air Seal pet flap features three jointed Lexan polycarbonate panels suspended from a reinforced metal rod.
Each panel is insulated and framed with magnetic weather stripping to enhance energy efficiency and seal against the elements.

🏠 Built for Homeowners & Fabricators
Installs like a door lite insert. Meets structural building codes.
Made in the USA with precision and pride.
🛠️ What’s Included
- Fully assembled pet door with PVC frame
- Lexan tri-panel flap with magnetic weather stripping
- Reinforced locking panel with lift-off hinges
- Screw hole covers and installation hardware
📋 Certified & Compliant
Florida Building Code Approval: FL40116-R1
ASTM E330 & E331 tested for wind and water resistance
Meets Wind Zone D debris impact standards
🐾 Give Your Pet Freedom Without Compromising Security
Made in the USA | Patent No. US 11,530,571 | Other patents pending
Because your dog isn’t just a pet — they’re family. The Guard Dog Pet Door gives them the freedom they deserve, while giving you the peace of mind you need.
Whether it’s a tail-wagging dash to the backyard or a quiet moment curled up inside, this door is built to protect what matters most — your home, your comfort, and your best friend.
🐶 Made for dogs. Designed for you. Trusted by both.
Shipping information
Free Shipping to the contiguous 48 United States.
Alaska, Hawaii, Puerto Rico, Saipan, Guam & U.S. Territories
These areas incur additional shipping charges on most items (typically $30–$400, depending on size, weight, and lithium battery regulations).
All shipments are fully insured.
Please message us for your exact shipping quote here