Replacement flap for Trixie pet door models 4420–4423, dimensions 14.5 × 15.5 cm

Replacement flap designed as a direct substitute for Trixie pet door models 4420–4423. The flap measures 14.5 × 15.5 cm and restores the opening and closing function of compatible indoor or outdoor doors. It is intended to replace worn, torn or otherwise damaged flaps so the existing frame and locking mechanism of the original Trixie door can continue to be used without full unit replacement.

Advantages

This replacement flap provides a precise fit for the specified Trixie models, maintaining the original sealing and movement characteristics. Using a correct-size flap avoids the need to remove or replace the entire pet door frame, reducing cost and installation time. The flap material is chosen to balance flexibility for pet access with sufficient rigidity to hang correctly and reseal the opening.

Suitable for

• Replacing worn or damaged flaps on Trixie pet doors 4420–4423
• Maintaining insulated access for small pets
• Indoor or sheltered outdoor installations where the original frame remains intact

Key specifications

• External dimensions: 14.5 × 15.5 cm (width × height)
• Compatible with Trixie pet door models 4420, 4421, 4422, 4423
• Single-flap design suitable for small pets such as cats and small dogs
• Flexible material engineered to swing open and reseal the opening

How to use

Remove the damaged flap from the existing Trixie door frame following the original assembly method, then align the replacement flap with the hinge or mounting channel and secure it in place. Ensure the flap hangs freely and checks for smooth movement in both directions. If necessary, trim any interfering edges of the frame or adjust the mounting to achieve an even seal. Test the flap operation several times to confirm correct installation and proper resealing.

Usage recommendations

Inspect the flap periodically for wear, cracks or loss of flexibility and replace it when sealing or movement is impaired. Use the replacement flap in the original compatible Trixie frame; avoid forcing the flap into incompatible frames to prevent damage. For outdoor installations, check the surrounding frame seals and weatherstripping to maintain insulation.