How to Install the PetSafe® Microchip Cat Door in a Wall

Important Information

  • You will need to purchase the installation adapter to install in a wall. The installation adapter can be purchased through our website here.
  • The Microchip Cat Door can be installed in doors and walls up to 2.75 inches. Depending on the thickness of your wall, you may also need to purchase Tunnel Extensions. Multiple tunnel extensions can be used, each adding 2 inches. Extension Tunnels can be purchased from our website here.

When you first open the box, do not throw away any included cardboard/paper pieces, these are used during install.


Before You Begin

Program your cat’s microchip to the door and test the door in your desired location before cutting or installing. For detailed instructions, visit our article How to Setup the PetSafe® Microchip Cat Door and Prepare for Installation.

What’s Included:

Included In BoxIncluded In Box
  • Interior Frame
  • Exterior Frame
  • Quick Start Guide
  • Cutting Template
  • Screw Plugs
  • Screws

Tool You Will Need:

Tools Needed Plus Adaptor and TunnelTools Needed Plus Adaptor and Tunnel
  • Installation Adaptor (sold separately)
  • Jigsaw
  • Drill
  • 12 mm Drill Bit
  • 6 mm Drill Bit
  • Tape Measure
  • Phillips Screwdriver
  • Sandpaper
  • Masking Tape
  • Pencil
  • Ruler
  • Level

Determine Cat Door Placement

Use stud finder to find studsUse stud finder to find studs

Decide where you would like to install the pet door. Use a stud finder to locate the studs in the wall and mark their location with a pencil. 


Check for electrical/plumbing fixtures that could be in the wall where you wish to place the pet door.

Measure Cats Belly To GroundMeasure Cats Belly To Ground

Measure your cat from the floor to their belly. Then mark that measurement on the door with a pencil.


Use a level to draw a horizontal line through the height marking to extend it.

Locate center between stud marksLocate center between stud marks

Locate the center point between the two stud markings. Use a level to draw a center vertical line through the shoulder height line.


Place the Template

Place Template On WallPlace Template On Wall
  • Place the template on your wall, with the belly height line on the template aligned with the belly height line you marked on your wall.
  • Use a level to confirm it is straight.
  • Tape the corners to hold it in place.

Depending on the presence of metal in your wall, there are two options on the cutting template. Please use the appropriate line for your wall construction.


Cut the Opening

Follow all safety instructions when using power tools. Be sure to always wear safety glasses.

Drill Holes Through TemplateDrill Holes Through Template

Drill holes according to the template using a 12 mm drill bit. Hold the drill steady at a 90-degree angle and use a framing square to keep it straight.

Cut Interior Template With JigsawCut Interior Template With Jigsaw

Place the jigsaw blade into a corner hole and cut along the appropriate template line. Continue cutting along the template until an opening is created. Remove any insulation that is in the cutout.

Cut Exterior With JigsawCut Exterior With Jigsaw

From the exterior of the home, finish cutting the hole through the wall using the four corner holes drilled through the wall as a guide. Clean the area of any dust, dirt, or debris.


Install the Adaptor, Frame, and Tunnel Extension

Slide Adaptor Through Interior Tunnel And Screw InSlide Adaptor Through Interior Tunnel And Screw In

Slide one adaptor plate over the tunnel on the interior frame (with flap) and attach it to the back of the frame using the two included pan headed screws.

Place Interior Assembled Frame On Wall and Mark HolesPlace Interior Assembled Frame On Wall and Mark Holes

From the interior of the home, position the interior assembly (interior frame and adaptor plate) in the cutout and mark the four screw holes from the installation adaptor on the wall. Then remove the assembly.

Drill Holes Through Interior Mark HolesDrill Holes Through Interior Mark Holes

Using the proper hardware for your wall construction, drill the appropriate size holes for your hardware and attach the interior frame with installation adaptor to the wall.

Tunnel ExtensionTunnel Extension

You may need to lengthen the tunnel depending on your wall thickness. To do so, add tunnel extensions until the desired length is reached. The tunnel extensions’ edges seat into each other and can be secured in place with glue.


Important: Do not cut the tunnel that is part of the interior frame. Key components are contained within the tunnel and any alteration to the tunnel will affect functionality.

Attach Metal Clips Onto Rectangular RecessesAttach Metal Clips Onto Rectangular Recesses

Attach the two included metal clips into the rectangular recesses on the remaining adaptor plate with the flat side of the clip flush with the outer face of the plate.

Attach Exterior Frame and Adaptor With Two ScrewsAttach Exterior Frame and Adaptor With Two Screws

Set the exterior frame on top of the remaining adaptor plate and attach using the two included 16mm ( ⅝”) flat head screws.

Place Exterior Assembled Frame On Wall and Mark HolesPlace Exterior Assembled Frame On Wall and Mark Holes

From the exterior of the home, position the exterior assembly (interior frame and adaptor plate) onto the tunnel and mark the four screw holes from the installation adaptor on the wall. Then remove the assembly.

Drill Holes Through Exterior Mark HolesDrill Holes Through Exterior Mark Holes

Using the proper hardware for your wall construction, drill the appropriate size holes for your hardware, and attach the exterior frame assembly to the wall.

Insert Finishing Plugs Into Exterior FrameInsert Finishing Plugs Into Exterior Frame

Insert the 8 blanking plugs into the exterior and interior installation adaptor plates and 2 blanking plugs into the exterior frame.

Caulk Exterior FrameCaulk Exterior Frame

Use weatherproof caulk around the exterior frame with for weather resistance. 


Contact Customer Care

If you need further assistance, please contact our customer care team.

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