Aluminum Medium Dog Door with Double Sliding Locks - Durable Doggie

In this review we look closely at the Aluminum Medium Dog Door with two sliding lock panels to see who will benefit most from it. The bottom line: this is a practical, heavy-duty option for owners of medium dogs up to 30 lbs who need a secure, weather-resistant flap in a standard residential door. The single biggest reason to buy is its rugged aluminum construction combined with a double locking panel system that both improves security and reduces heat transfer in rough weather.

Key Features

• Flexible Size: The expanding tunnel fits paneled, wood, PVC and metal doors from 1 3/8' to 2 1/8' thick, making it usable in most interior and exterior door types.
• Flap Opening: The flap opening measures 8 7/8' wide by 12 1/4' high, which is a good fit for many medium-breed dogs and provides a comfortable passage.
• Strong and Durable: Constructed from rugged, sturdy aluminum so active dogs can use the door without owners worrying about bite damage or breakage.
• Two Magnetic Flaps: Magnetic flaps help the plate reset quickly after use and create a tighter seal to limit drafts and reduce noise.
• Double Locking Panels: Two adjustable sliding panels let you restrict access, change the usable height, and improve insulation against cold and wind.
• Easy to Install: Ships with a cutting template, step-by-step guide and installation hardware, with rivets recommended for hollow doors for extra hold.

Who It's For

This door is best for owners of medium dogs up to 30 lbs who want a durable, low-maintenance pet entry that fits common door thicknesses and offers enhanced security through dual sliding panels. It suits households that need a weather-resistant option because the magnetic flaps and adjustable panels help keep drafts and pests out.

It is less ideal for owners of very small or very large breeds, or for those who need a fully automated electronic solution. Also, buyers who cannot or prefer not to cut their door should consider professional installation or alternate pet doors that mount in walls or windows.

Pros & Cons

Pros

• Sturdy aluminum construction provides long-term durability for active dogs.
• Double sliding locking panels increase security and reduce heat transfer in rough weather.
• Magnetic flaps offer reliable resealing after use to limit drafts.
• Includes template and hardware to simplify installation, with rivets recommended for hollow doors.

Cons

• Slideability of the panels receives mixed feedback, so some adjustment may be needed for smooth operation.
• Not suitable for dogs larger than the specified weight or significantly different shoulder heights.

Specifications

Our Verdict

For owners of medium dogs up to 30 lbs who want a dependable, weather-resistant door, this aluminum dog door offers strong value through durable construction and effective sealing. The double sliding locks and magnetic flaps make it a sensible choice where security and insulation matter, provided the buyer is comfortable with a cut-and-fit installation.

Frequently Asked Questions

Will this fit a hollow door?
Yes, it fits hollow doors within the 1 3/8' to 2 1/8' thickness range; using rivets is recommended to secure it better in hollow doors.

Can the height be adjusted for smaller dogs?
Yes, the two adjustable sliding panels can lower the usable opening to accommodate smaller dogs or limit passage.

Do the flaps seal well against drafts?
Yes, the magnetic flaps are designed to quickly reset and provide a tighter seal, and customers report improved protection against cold air.