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Three at a time, because walls are thick

SureFlap Tunnel extender, 3-pack

A three-pack of 50 mm (1.97 in) tunnel extenders in white, for SureFlap microchip cat flaps, DualScan and Connect models — 150 mm (5.91 in) of wall in one purchase.

SureFlap tunnel extender three pack in white

SureFlap Tunnel extender, 3-pack

A three-pack of 50 mm (1.97 in) tunnel extenders in white, for SureFlap microchip cat flaps, DualScan and Connect models — 150 mm (5.91 in) of wall in one purchase.

Contents
Three extenders, 50 mm (1.97 in) each
Material
White plastic
Compatible with
SureFlap Microchip Cat Flap, DualScan and Connect
Amazon reference
B0DX2LZQBX (identical on 6 markets)
EAN
5060180394387
  • Cheaper per extender than buying them singly
  • 150 mm (5.91 in) covers most cavity walls in one order
  • Still proprietary, and still an unexpected cost on top of the flap

Best for: A wall installation, ordered at the same time as the flap rather than a week later.

Check price on Amazon

Specifications

Contents
Three extenders, 50 mm (1.97 in) each
Material
White plastic
Compatible with
SureFlap Microchip Cat Flap, DualScan and Connect
Amazon reference
B0DX2LZQBX (identical on 6 markets)
EAN
5060180394387

What it is

Three white 50 mm (1.97 in) tunnel extenders for SureFlap cat flaps — the standard, DualScan and Connect models.

The right way to buy them

With the flap. The commonest sequence in this category is: buy flap, cut hole, discover the tunnel is 70 mm (2.76 in) and the wall is 300, order extenders, wait. Adding 150 mm (5.91 in) to the basket at the outset costs the same and saves the week.

Fitting matters more than the part

An extender is a plastic collar. What decides whether the installation is any good is that the tunnel is square to the wall, sealed at the outer face and properly supported. Filler packed round a crooked tunnel is what makes a flap drafty and stiff.

Not for the large pet doors

SureFlap’s bigger doors take different extenders. Check the model rather than the brand.

The questions owners ask

Single or three-pack?

Measure first. A door needs none, a thin partition one, a cavity wall usually three or more. The three-pack is the cheaper unit price and the right default for any wall fitting.

Do they seal against drafts?

They are designed to interlock and seal with the flap’s own tunnel. What decides the result is the fitting: a tunnel that is square to the wall and properly sealed at the outer face keeps weather out; one packed with filler does not.

Will they fit a pet door as well as a cat flap?

SureFlap lists these for the cat flaps. The larger pet doors take their own extenders — check the model before ordering, because the two ranges are not interchangeable.

Products this fits

More door tags & tunnels

  • SureFlap 50 mm tunnel extender for microchip cat flaps

    Sure Petcare Tunnel extender, 50 mm

    A 50-millimeter tunnel extension for SureFlap cat flaps, compatible with the standard, DualScan and Connect models.

    Adds
    50 mm (1.97 in) to the flap’s standard 70 mm (2.76 in) tunnel
    Compatible with
    SureFlap Microchip Cat Flap, DualScan, and Microchip Cat Flap Connect
    Amazon reference
    B0D9H9LYWS (identical on 6 markets)
    EAN
    5060180394370
    • Turns a flap designed for a door into one that fits a wall
    • Stackable: several extenders cross a thick wall
    • Proprietary — nothing else fits properly, and a badly sealed tunnel is a draft

    Best for: Fitting a SureFlap into anything thicker than a door panel.

    ≈ $21
    Check price on Amazon
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    Magnets in the pack
    2
    Price per magnet
    $7.00
    Technology
    Magnetic — not RFID
    Power
    None
    Weight
    27 g (1 oz) for the pair
    Stated compatibility
    Cat Mate electromagnetic cat flaps
    Selectivity
    None — any matching magnet opens the flap
    Magnet strength
    Not published
    Amazon reference
    B0002DHNJQ
    EAN
    0035368702570
    • Nothing to pair, nothing to charge and nothing to go out of date
    • No serial number threshold and no firmware generation to check
    • No selectivity — a neighbor’s cat wearing any matching magnet gets in

    Best for: A Cat Mate electromagnetic flap where simplicity matters more than selectivity

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  • PetSafe electronic pet door RFID collar key with battery

    PetSafe PAC19-15793 Electronic Pet Door Key

    A powered RFID key for PetSafe Electronic Pet Doors, battery included, stated to last three to six months and not to work with the SmartDoor Plus.

    Keys in the pack
    1
    Price per key
    $24.93
    Technology
    Powered RFID
    Battery
    RFA-67, included
    Battery life
    3 to 6 months, depending on use
    Stated compatibility
    All sizes of the PetSafe Electronic Pet Door
    Stated incompatibility
    SmartDoor Plus
    Pets per door
    Up to 5
    Collar fit
    Fits most collar ID tags
    Weight
    20 g (0.7 oz)
    Read range
    Not published
    Amazon reference
    B000WJ0IGU
    EAN
    729849110458
    • Names the one door in its own range that it will not open
    • Battery included, and the part number given — RFA-67 — so a replacement can be found
    • The most expensive key here at $24.93, and sold singly where the others come in pairs

    Best for: A PetSafe Electronic Pet Door, as a replacement key or a second animal

    Check price on Amazon

Elsewhere in the cupboard

  • PetSafe ScoopFree disposable litter tray refill filled with blue crystals

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    A pre-filled blue crystal disposable tray for the ScoopFree Original and Ultra, with a plastic leak lining.

    Price
    $25.99
    Tray count
    Not stated in the title — weight and size match one tray
    Three-pack on this shelf
    ≈ $40, or $13.33 a tray
    Litter
    PetSafe premium blue crystals, pre-filled
    Leak protection
    Plastic tray lining
    Dust claim
    99% dust free — method not published
    Compatibility
    ScoopFree Original and Ultra
    Shipping
    1,225 g (43.2 oz), 559 × 368 × 51 mm (22 × 14.5 × 2.01 in)
    Reference
    PAC19-14262, EAN 0701002633554
    Stated life
    "Every few weeks" — no figure
    Amazon reference
    B00CWR7HIM
    EAN
    0701002633554
    • Fits both ScoopFree generations, which few consumables on this shelf do
    • A plastic lining against leaks, which matters on a tray carried full to the bin
    • No tray count on the listing, and the shipping weight matches one tray

    Best for: A ScoopFree owner who has checked the count and cannot get the three-pack

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    A sealed pail for dog waste with an odor-locking slide and a locking lid, taking square refill film stated to last two months for one dog.

    Body
    246 × 246 × 470 mm (9.69 × 9.69 × 18.5 in), 2 kg
    Seals
    Sliding odor lock, plus a handle that locks the lid
    Refill shape
    Square — no third-party equivalent found in this survey
    Refill included
    1, stated to last up to 2 months for one dog
    Takes
    Waste, bags, diapers, training pads, dog litter
    Use
    Indoors or outdoors, UV-protected plastic
    Temperature limit
    Not below −10 °C (14 °F) / 14 °F
    EAN
    0666594209436 — Litter Genie refills are 0666594209344
    Refill price
    Not published
    Usable capacity
    Not published
    Amazon reference
    B0CHTDZ1JC
    EAN
    0666594209436
    • Two separate seals: an odor slide and a lid the dog cannot lift
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    • A square refill, with no third-party alternative in the American survey

    Best for: One dog, where the walk ends at the pail rather than at the outside bin

    Check price on Amazon
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    A two-pack of replacement grinding heads for WWVVPET, Too-zey and other grinders that share the same shape — the generic option, with a fit to verify.

    Contents
    Two grinding heads
    Compatible with
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    Amazon reference
    B09FZ1L4C1 (identical on 6 markets)
    EAN
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    • Fits WWVVPET, Too-zey and other grinders that share the same head shape
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    Best for: Owners of one of the many unbranded grinders that share this shape.

    Check price on Amazon

All door tags & tunnels

Prices quoted in these summaries are dated readings. The live price is shown next to each product.