Is the cat door see through transparent like glass or opaque, my cat will not go through unless she can see what is behind the door

It is very clear, transparent, like glass. Not opaque (my old cat door was probably what you call opaque, like a haze or film over it; this is definitely clear in comparison).

Will this work in an alluminum storm door? Our cat is 16 lbs will it accomodate his size?

The unit may stick out depending how thick the aluminum door is. I have it in a inside wooden door at a thickness of an inch and a half. It should work but it may not be flush on both sides. I would try though. As for the cat size, I've got 2. 20 / 21lb maine coons , they walk right through with no problem whatsoever. The only door I was able to find to accommodate large cats. Again, I would buy and try. Scot

How big is the required hole in the door?

Thanks so much for answering my question...

What are the exterior dimensions of this pet door.???

9"wide x 9.5" long. That's the frame exterior. It works great! I have it on an inside door to my bedroom. I can lock them out when I want to sleep. Or let them come in for morning cuddle time.

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Large Cat & Small Dog Flap, Secure 4-Way-Locking Mechanism, Brown

Product ID: 6110721

Details

Brand
Cat Mate
Color
Brown 221 Cat
Material
transparent
Mattress Thickness
2 Inches
Size
Large (Pack of

🐾Fits pets up to 14" shoulder height

🔒4-way lock for full access control

🌧️Weatherproof with draught & rain seals

267.72 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Keep your pet’s freedom secure and your home cozy with the Cat Mate 4-Way Lock!

EFFORTLESS INSTALLATION - Fits UPVC, metal, and wooden doors up to 2" thick with clear, step-by-step guides for quick setup.
TAILORED FOR LARGE PETS - Accommodates cats and small dogs up to 14" shoulder height, ensuring comfort and freedom.
ULTIMATE ACCESS CONTROL - 4-way locking system lets you customize pet entry and exit—full control at your fingertips.
WHISPER QUIET OPERATION - Magnetic closure guarantees silent, smooth flap movement—no more noisy interruptions.
BUILT TO BRAVE THE ELEMENTS - Weatherproof brush and rain seals keep your home cozy and protected year-round.

The Cat Mate 4-Way-Locking Large Cat Flap is a durable, weatherproof pet door designed for large cats and small dogs up to 14" shoulder height. Featuring a versatile 4-way locking system, magnetic silent closure, and compatibility with UPVC, metal, and wooden doors up to 2" thick, it offers pet owners full control over their pet’s access while maintaining home comfort. Easy to install and backed by a 3-year guarantee, it’s the smart choice for secure, convenient pet access.

Specifications

ASIN	B0002DHNJG
Best Sellers Rank	#80,030 in Pet Supplies ( See Top 100 in Pet Supplies ) #153 in Cat Doors
Brand	Cat Mate
Brand Name	Cat Mate
Closure Type	Magnetic
Color	Brown 221 Cat Flap
Customer Reviews	4.3 out of 5 stars 1,257 Reviews
Dog Breed Size	Medium
Frame Material	Polymer
Global Trade Identification Number	00035368202216
Included Components	all
Item Type Name	Large 4-Way Cat Flap Brown
Item Weight	1.2 pounds
Manufacturer	Ani Mate Inc
Manufacturer Part Number	221B
Manufacturer Warranty Description	3 year guarantee.
Material	transparent
Material Type	transparent
Mattress Thickness	2 inches
Maximum Compatible Thickness	2 inches
Minimum Compatible Thickness	2 inches
Minimum compatible thickness	2 inches
Model Number	221B
Number of Items	1
Pet Type	Cat, Dog
Size	Large (Pack of 1)
Target Audience	Cats
UPC	035368202216 712321846846
Unit Count	1 count
Weight Capacity Maximum	75 pounds

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