A cat flap in action.A wall-mounted flap with access tunnel.

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Cat Doors & Flaps

A cat flap (also known as a doggie door or pet door) is a hinged flap set into a door, wall or window to allow cats, dogs, or other domestic pets to enter and exit a house on their own without needing a human to open the door. more...

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They are very popular with cat owners, many of whom like to encourage their cats' natural independence by letting them come and go at will — particularly in the United Kingdom where it is believed that about 90% of all cats (including ferals) have access to the outdoors, many of these via cat flaps (). Flaps for most dogs must be bigger and therefore are often constructed differently; except in rural areas they tend to give access to fenced-in yards or gardens rather than the neighborhood at large.

The simplest are just weighted flaps, but these can have problems with wind blowing open the flap or making a rattling noise. A magnet on the flap addresses this issue by holding the door in place when not in use, but not so securely as to prevent access. Sometimes a flap will also have adjustable catches to restrict the opening of the flap in one direction or the other — for example to allow the animal to come in, but not go out again. More sophisticated flaps have electromagnetic catches that can detect a matching permanent magnet worn on the animal's collar and unlock the flap as the animal approaches, thus preventing any other animals using the flap to enter the house.

Devotees suggest a pet door should be set at a height so that the bottom of the opening is just a little lower than the belly of the animal when standing. Many animals prefer to use a flap with a transparent flap, so that they can be sure there is nothing threatening outside before leaving the safety of the home.

The invention of the cat flap is often attributed to Sir Isaac Newton in the seventeenth century; this story, however, is usually related (, for example) without any sources to support it.

Read more at Wikipedia.org


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PetSafe 4-Way Locking with Tunnel Cat Pet Door Indoor Outdoor Transparent Flap SPetSafe 4-Way Locking with Tunnel Cat Pet Door Indoor Outdoor Transparent Flap S $12.00 Trending at $17.04 PetSafe Microchip Cat Door FlapPetSafe Microchip Cat Door Flap $89.95 List price:  Previous Price $109.95
2Way magnet Screen Moustiquaire Pet Dog Puppy Patio Door Gateway Window Safety E2Way magnet Screen Moustiquaire Pet Dog Puppy Patio Door Gateway Window Safety E $9.99 Screen Door Dog Footprint Pattern Cat Window Screen Doggie Flap Safe Pet SupplieScreen Door Dog Footprint Pattern Cat Window Screen Doggie Flap Safe Pet Supplie $15.99 to $35.22
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White 4-Way Magnetic Lockable Cat Kitten Dog Pet Flap Door Small Medium13lbWhite 4-Way Magnetic Lockable Cat Kitten Dog Pet Flap Door Small Medium13lb $11.92 PetSafe 2-Way Cat Flap DoorPetSafe 2-Way Cat Flap Door $20.99
Petsafe Cat Flap Small Dog Locking DoorPetsafe Cat Flap Small Dog Locking Door $8.49 Was:  Previous Price $9.99 Brand New in Box Never Opened PetSafe 2-Way Cat Flap Small 1-15 lbBrand New in Box Never Opened PetSafe 2-Way Cat Flap Small 1-15 lb $15.99
Ideal Pet Products Cat Flap Door with 4 Way Lock, 6.25" x 6.25" Flap Size WhiteIdeal Pet Products Cat Flap Door with 4 Way Lock, 6.25" x 6.25" Flap Size White $17.99 Was:  Previous Price $19.99 Cat door The Kitty Pass Interior Cat Door, Pet Door Hidden Litter BoxCat door The Kitty Pass Interior Cat Door, Pet Door Hidden Litter Box $34.95
Top Thin Silicone Airline To Being 8 Feet And 25 Feet New Lot Of FiveTop Thin Silicone Airline To Being 8 Feet And 25 Feet New Lot Of Five $18.99 Interior 2-Way Locking Cat Flap Door Home Dog Entry Pet Exit Enter Tool PetSafeInterior 2-Way Locking Cat Flap Door Home Dog Entry Pet Exit Enter Tool PetSafe $8.99
Oxgord Pet Door For Cats & Dogs Up To 15 Lbs. Ptdr-0110 New In BoxOxgord Pet Door For Cats & Dogs Up To 15 Lbs. Ptdr-0110 New In Box $9.99 4 Way Locking Waterproof Pet Doors Interior Exterior Cat Flap Door for Cats Us4 Way Locking Waterproof Pet Doors Interior Exterior Cat Flap Door for Cats Us $14.03 to $19.46 List price:  Previous Price $21.61
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Ideal Perfect Pet Aluminum Sash Window Cat Door in 3 sizes for cats up to 12 lbsIdeal Perfect Pet Aluminum Sash Window Cat Door in 3 sizes for cats up to 12 lbs $119.95 to $136.95 White 4-Way Medium Pet Cat Kitten Small Lockable Safe Flap Door Us StockWhite 4-Way Medium Pet Cat Kitten Small Lockable Safe Flap Door Us Stock $9.45
Pet Safe Cat, Flap Transparent Flap with Magnetic Closure, Easy To Use Side LockPet Safe Cat, Flap Transparent Flap with Magnetic Closure, Easy To Use Side Lock $9.99 Lockable Plastic Dog Cat Kitty for Screen Door Window Screen Flap Door for PetsLockable Plastic Dog Cat Kitty for Screen Door Window Screen Flap Door for Pets
Ideal Pet Products Soft Flap Cat Door MediumIdeal Pet Products Soft Flap Cat Door Medium $20.99 Petsafe Magnetic 4 Way Locking Pet Cat Flap Door - WhitePetsafe Magnetic 4 Way Locking Pet Cat Flap Door - White $25.49 Was:  Previous Price $29.99
Large Cat And Dog HoleDoor Outer 4 Way Locking Waterproof Cat Flap Door UsLarge Cat And Dog HoleDoor Outer 4 Way Locking Waterproof Cat Flap Door Us $16.99 👉Ideal Pet Products Deluxe Cat Flap Clear Door 6 1/4" x 6 1/4" Opening👉Ideal Pet Products Deluxe Cat Flap Clear Door 6 1/4" x 6 1/4" Opening $20.00
Perfect Pet Pet Passage for ScreensPerfect Pet Pet Passage for Screens $25.00 Cat Door The Interior Cat Pass Door Small Pet Dog Door Hidden Litter Box WhiteCat Door The Interior Cat Pass Door Small Pet Dog Door Hidden Litter Box White $19.99
PetSafe Screen Door for Dogs & Cats P1-Zb-11PetSafe Screen Door for Dogs & Cats P1-Zb-11 $19.95 PetSafe 2-Way Interior Locking Cat Small Pets Door Indoor Access Up to 15 lbsPetSafe 2-Way Interior Locking Cat Small Pets Door Indoor Access Up to 15 lbs $14.99
Depets Magenetic Cat 6" Flap Pet Dog Door w/ 4 Way Lock 7.5" x 7.8" Outer SizeDepets Magenetic Cat 6" Flap Pet Dog Door w/ 4 Way Lock 7.5" x 7.8" Outer Size $4.99 Interior 2-Way Locking Cat Flap Door Home Entry 1-15lb sm Dog Exit Enter PetSafeInterior 2-Way Locking Cat Flap Door Home Entry 1-15lb sm Dog Exit Enter PetSafe $12.89
7.1 x 4.5 " Premium Interior Pet Cat Door for Medium Large Cats Freely Coming in7.1 x 4.5 " Premium Interior Pet Cat Door for Medium Large Cats Freely Coming in $19.99 Petsafe Big Cat Door Or Small Dog Up To 25Lb 7 1/8 × 7 15/16 Locks,Free ShippingPetsafe Big Cat Door Or Small Dog Up To 25Lb 7 1/8 × 7 15/16 Locks,Free Shipping $22.00
New listing
		Cat Mate Wall Liner for Cat Flap - Enables installation of pet door in any wallNew listing Cat Mate Wall Liner for Cat Flap - Enables installation of pet door in any wall $10.50 Staywell Original Small Plastic Dog or Cat Door 715UsStaywell Original Small Plastic Dog or Cat Door 715Us $27.95
*New* Cat Mate Electromagnetic Cat Flap #254W (White)*New* Cat Mate Electromagnetic Cat Flap #254W (White) $53.99 Big Cat Door Pet Safe 1-25 pounds 4 Way Locking DoorBig Cat Door Pet Safe 1-25 pounds 4 Way Locking Door $19.99
❤ 4 Way Cat Kitten Dog Lock Lockable Flap Door Gate For Medium Small Pet Safe Us❤ 4 Way Cat Kitten Dog Lock Lockable Flap Door Gate For Medium Small Pet Safe Us $9.75 2 Way Magnet Pet Cat Dog Puppy Easy Screen Door for Patio Door Window Screens Ek2 Way Magnet Pet Cat Dog Puppy Easy Screen Door for Patio Door Window Screens Ek $ 00004000 9.99
Dog Cat Flap Round Clear Door Entry with 4 Way Lock Liner Kit Weather-ResistantDog Cat Flap Round Clear Door Entry with 4 Way Lock Liner Kit Weather-Resistant $18.85 PetSafe Cat Door LargePetSafe Cat Door Large $17.99
Perfect Pet Lockable Cat Flap Door ~ 6 1/4" Square ~ New in Damaged PackagePerfect Pet Lockable Cat Flap Door ~ 6 1/4" Square ~ New in Damaged Package $7.99 Was:  Previous Price $9.99 PetSafe Microchip Cat Door Tunnel Extension for Ppa00-16145PetSafe Microchip Cat Door Tunnel Extension for Ppa00-16145 $16.95 List price:  Previous Price $24.95
Door Buddy® Plus Door Stopper Combo Pack | Dog Proof Cat's Litter Box | Pet GateDoor Buddy® Plus Door Stopper Combo Pack | Dog Proof Cat's Litter Box | Pet Gate $18.97 Cat door The Kitty Pass Xl Large Cat Door, Hidden Litter box Large Pet DoorCat door The Kitty Pass Xl Large Cat Door, Hidden Litter box Large Pet Door $44.95
Door Buddy® Door Strap & Latch | Dog Proof The Cat's Litter Box without pet gateDoor Buddy® Door Strap & Latch | Dog Proof The Cat's Litter Box without pet gate $15.94 SureFlap DualScan Microchip cat dog pet door, whiteSureFlap DualScan Microchip cat dog pet door, white $49.99
Medium Pet Flap Door Large Cat, Small Dog, Ideal Pet Products New Sealed (532)Medium Pet Flap Door Large Cat, Small Dog, Ideal Pet Products New Sealed (532) $26.00 Bidirectional Lock Dog Exit Pet Nest Door Cat tunnel 4 Way Magnetic LockingBidirectional Lock Dog Exit Pet Nest Door Cat tunnel 4 Way Magnetic Locking $11.41 to $11.65
Lm Makrolon Bayer Catwalk Cat Door For Wood W-Mcdsw Magnetic Grey Cat Flap NewLm Makrolon Bayer Catwalk Cat Door For Wood W-Mcdsw Magnetic Grey Cat Flap New $19.99 Trixie 4-Way Cat Flap Door New NibTrixie 4-Way Cat Flap Door New Nib $12.00
Cat Door The Kitty Pass Interior Cat Door Small Pet Dog Door Hidden Litter BoxCat Door The Kitty Pass Interior Cat Door Small Pet Dog Door Hidden Litter Box $19.99 PetSafe Infra Red Cat Door Locking Flap Staywell Collar Key up to 15 pound petsPetSafe Infra Red Cat Door Locking Flap Staywell Collar Key up to 15 pound pets $24.99
Cat Mate 4 Way Locking Cat FlapCat Mate 4 Way Locking Cat Flap $25.99 SureFlap Microchip Pet Door White New Open BoxSureFlap Microchip Pet Door White New Open Box $85.00
Cat & Dog Flap Door for Interior/Exterior Doors 4 Way Lock for Pets Entry & ExitCat & Dog Flap Door for Interior/Exterior Doors 4 Way Lock for Pets Entry & Exit $8.19 Sureflap Microchip Pet Door Connect With Hub and Mounting AdapterSureflap Microchip Pet Door Connect With Hub and Mounting Adapter $250.00
Pet Door-Extra Large Middle Small Cat,Dog Gate Pet Pass Safe Locking DoorPet Door-Extra Large Middle Small Cat,Dog Gate Pet Pass Safe Locking Door $19.99 to $26.99 Extra Large 17"x14" Lockable Dog Cat Pet Screen Door Window Flap Exterior EntryExtra Large 17"x14" Lockable Dog Cat Pet Screen Door Window Flap Exterior Entry $25.99
Brand New Hale Pet Door (Cat or Dog) Double Flap - Size Small / Medium Toy BreedBrand New Hale Pet Door (Cat or Dog) Double Flap - Size Small / Medium Toy Breed $29.95 Cat Mate "Elite" 305 Super Selective Electronic Cat DoorsCat Mate "Elite" 305 Super Selective Electronic Cat Doors $179.99
4 Way Pet Cat Dog Flap Door Supply Kitten Lockable Safe Gate w Telescoping Frame4 Way Pet Cat Dog Flap Door Supply Kitten Lockable Safe Gate w Telescoping Frame $12.99 Sureflap Microchip Pet Door + Tags Free ShippingSureflap Microchip Pet Door + Tags Free Shipping $100.00
Cat Interior Door With Cleaning Grooming B
00004000
rush For Kitty 2 Way Pets Passes Ps337Cat Interior Door With Cleaning Grooming B 00004000 rush For Kitty 2 Way Pets Passes Ps337 $22.06 PetSafe Deluxe Cat Flap with Tunnel P1-4W-11 - New in PackagePetSafe Deluxe Cat Flap with Tunnel P1-4W-11 - New in Package $8.99 Trending at 00004000 $17.92
SureFlap Microchip Cat Flap Door - WhiteSureFlap Microchip Cat Flap Door - White $79.95 Trending at $111.99 Cat door The Kitty Pass Interior Cat Door Pet Door Hidden Litter Box For M/L CatCat door The Kitty Pass Interior Cat Door Pet Door Hidden Litter Box For M/L Cat $19.99
Large Chubby Kat Pet Door 7.5" x 10 1/2"Large Chubby Kat Pet Door 7.5" x 10 1/2" $21.95 Trending at $24.99 New listing
		Electronic Microchip Pet Door Operates With Pet's Existing Chip Or SureFlap RfidNew listing Electronic Microchip Pet Door Operates With Pet's Existing Chip Or SureFlap Rfid $74.99
New listing
		SureFlap - DualScan Microchip Cat Door, WhiteNew listing SureFlap - DualScan Microchip Cat Door, White $89.99 New PetSafe 4-Way Locking Cat & Dog Lockable Pet Door Flap Small 6x5 Hpa11-10876New PetSafe 4-Way Locking Cat & Dog Lockable Pet Door Flap Small 6x5 Hpa11-10876 $12.99
Large (Outer Size 9.2" X 9.8") 4 Way Locking - Cat/Dog Doors For Interior DoorsLarge (Outer Size 9.2" X 9.8") 4 Way Locking - Cat/Dog Doors For Interior Doors $20.69 Was:  Previous Price $22.99 Cat Mate Door Liner White New In BoxCat Mate Door Liner White New In Box $15.98 Was:  Previous Price $19.97
PetSafe Cat Magnetic Flap DoorPetSafe Cat Magnetic Flap Door $4.99 Dog Cat Flap Doors with 4 Way Lock for Pets Entry & Exit Small Medium SafeDog Cat Flap Doors with 4 Way Lock for Pets Entry & Exit Small Medium Safe $6.99
Pet Passage Screen Door Window Flap Magnetic Lockable Dog Cat Ideal 16.5 X 13.5Pet Passage Screen Door Window Flap Magnetic Lockable Dog Cat Ideal 16.5 X 13.5 $13.99 👉Deluxe Cat Kittie Lap Door Ideal Pet Products 4 Way Lock Silent👉Deluxe Cat Kittie Lap Door Ideal Pet Products 4 Way Lock Silent $4.50
Perfect Pet TubbyKat DoorPerfect Pet TubbyKat Door $29.00 Ideal # Spf Pet Products Cat Flap Small Cat Door Locking - 6 1/4" - New In BoxIdeal # Spf Pet Products Cat Flap Small Cat Door Locking - 6 1/4" - New In Box $19.00
PetSafe 4 Way Locking Cat/Small Dog Flap Door Tunnel Small for 1 - 15 lb PetsPetSafe 4 Way Locking Cat/Small Dog Flap Door Tunnel Small for 1 - 15 lb Pets $16.99 4 Way Large Medium Small Pet Cat Puppy Dog Door Flap Locking Lockable Safe Gate4 Way Large Medium Small Pet Cat Puppy Dog Door Flap Locking Lockable Safe Gate $11.99 to $21.99
PetSafe Microchip Cat Door Glass or Metal Installation Adaptor for Ppa00-16145PetSafe Microchip Cat Door Glass or Metal Installation Adaptor for Ppa00-16145 $19.95 List price:  Previous Price $29.95 PetSafe Electronic SmartKey for use with SmartDoor  #Pac11-11045  New!PetSafe Electronic SmartKey for use with SmartDoor  #Pac11-11045  New! $17.39
Cat Doors Large (Outer Size 9.9" X 9.2") w/ 4 Way Locking, Waterproof Flap DoorCat Doors Large (Outer Size 9.9" X 9.2") w/ 4 Way Locking, Waterproof Flap Door $18.99 PetSafe Wall Entry Aluminum Pet Door, Small, Medium & Large SizesPetSafe Wall Entry Aluminum Pet Door, Small, Medium & Large Sizes $67.95 to $109.95
SureFlap Microchip Cat Flap Dual Scan Brown New Open BoxSureFlap Microchip Cat Flap Dual Scan Brown New Open Box $70.00 Chubby Kat cat doorChubby Kat cat door $25.00
New listing
		PetSafe 2 Way Split AdapterNew listing PetSafe 2 Way Split Adapter $15.00 Endura Flap™ Dog Doors for WallsEndura Flap™ Dog Doors for Walls $309.99 to $579.99
PetSafe Electronic SmartKey for use with SmartDoor Pac11-11045 With 2 Extra BattPetSafe Electronic SmartKey for use with SmartDoor Pac11-11045 With 2 Extra Batt $14.99 4 Way Small Medium large Pet Cat Kitten Dog Supply Lock Lockable Safe Flap Door4 Way Small Medium large Pet Cat Kitten Dog Supply Lock Lockable Safe Flap Door $14.50 to $17.29
PetSafe Cat Flap Pet Door New - Box Damaged, Contents Fine,Transparent, LocksPetSafe Cat Flap Pet Door New - Box Damaged, Contents Fine,Transparent, Locks $6.00 PetSafe 2-Way Locking Indoor Cat Door Cc10-050-11PetSafe 2-Way Locking Indoor Cat Door Cc10-050-11 $13.50 Was:  Previous Price $15.00
Ideal Lockable Cat Flap Pet Door 4 Way Weatherproof Small Size New In BoxIdeal Lockable Cat Flap Pet Door 4 Way Weatherproof Small Size New In Box $15.00 Replace Flap For Ideal Pet Products Chubby Kat/Hefty, 7.5" X 10.5" Lexan #CfrfReplace Flap For Ideal Pet Products Chubby Kat/Hefty, 7.5" X 10.5" Lexan #Cfrf $15.00
Door Buddy® Baby Proof Door Lock Plus Foam Finger Pinch Guard & Door StopperDoor Buddy® Baby Proof Door Lock Plus Foam Finger Pinch Guard & Door Stopper $18.97 4 Way Cat Dog Lock Lockable Frame Safe Flap Door Gate For Large Medium Pet 18lb4 Way Cat Dog Lock Lockable Frame Safe Flap Door Gate For Large Medium Pet 18lb $14.98
Cat Door The Kitty Pass Interior Cat Door Pet Hole Hidden Litter Box For M/L PetCat Door The Kitty Pass Interior Cat Door Pet Hole Hidden Litter Box For M/L Pet $19.99 4 Way Lockable Pet Flap Door For Large Medium Small Size Dog Cat White/Coffee Us4 Way Lockable Pet Flap Door For Large Medium Small Size Dog Cat White/Coffee Us $15.86 to $27.37
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Prices current as of last update, 07/14/19 7:57am.

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