PetSafe NEVER RUST Dog and Cat Door, Large, For Pets Up To 100 lb, Paintable, Easy DIY Installation, Closing Panel Included, Install in Interior and Exterior Doors or Walls, Durable, Adjustable Flap Review
By Marcus Bell · Dog nutrition editor · Published 2026-06-04 · Updated 2026-06-26
4.4(21,979)Amazon rating$64.991,000+ bought last month
Our verdict
The PetSafe Never Rust Dog and Cat Door is one of the best-selling doors in this category, and with nearly 22,000 reviews at a 4.4 star average, it's clearly a trusted, budget-friendly choice for pets up to 100 pounds.
Owners who want an affordable, paintable, easy-to-install door for pets up to 100 pounds without dealing with metal corrosion over time.
Skip if
You want an aluminum or steel frame for maximum durability, since this model relies on plastic construction rather than metal.
Breed size Large
Weight 3.8 Pounds
Our scorecard
4.4/5overall
Owner rating4.4/5
4.4 average across 21,979 owner ratings
Popularity4.6/5
21,979 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog and cat food, health, gear and grooming we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
["The PetSafe Never Rust door is a large size model rated for pets up to 100 pounds, built with a plastic frame and material that's designed to resist the rust issues that can affect metal framed doors over time. It's paintable, which lets owners match it to their door color, and PetSafe markets it for easy DIY installation in both interior and exterior doors or walls.", "It uses a flap and snap closure with an adjustable flap, and the box includes the plastic pet door, a snap-on cover, hex nuts, nylon screws, a template, and an installation guide. It's backed by a one year non-transferable manufacturer's warranty from Radio Systems Corporation.", "At $64.99, this sits at a moderate price point, and its sales numbers back up the value: with 21,979 reviews at a 4.4 star average and around 1,000 bought in the past month, it's the top seller among the doors in this batch, ranked number 2 in Dog Doors on Amazon."]
Pros
Never rusts thanks to plastic construction, unlike metal framed doors
Paintable to match your door color
Adjustable flap and easy DIY installation for interior or exterior use
Rated up to 100 lb, covering most large dogs
Massive review base of nearly 22,000 with a strong 4.4 star average
Cons
Plastic construction may feel less rugged than aluminum or steel alternatives
Still requires cutting into a door or wall for installation
Adjustable flap adds a small amount of complexity compared to fixed flap designs
Specifications
Breed size
Large
Weight
3.8 Pounds
Performance notes
The compatible thickness range spans from about 0.06 to 2 inches, giving it flexibility across thin and standard door thicknesses. The flap and snap closure combined with an adjustable flap setting lets owners fine-tune how snug the seal is, and because the frame is plastic rather than metal, it avoids the rust that can eventually affect metal framed doors installed in exterior locations exposed to moisture.
What buyers say
With 21,979 reviews averaging 4.4 stars and roughly 1,000 units bought in the past month, this is by a wide margin the most purchased and most reviewed door in this set, reflecting strong, sustained demand and broad household compatibility.
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