Ideal 4-Way Locking Cat Doors
Features
Both use unbreakable clear polycarbonate (others use Plexiglas). The opening is larger than usual--especially the Hefty Cat size.
The bright white frames telescope to allow for a self-framing fit between 1 1/4" and 1 3/4 " which covers standard interior and exterior doors.
This Cat Flap and Hefty Cat Flap incorporate a 4-way locking mechanism. And it's also available in a patio panel version at Ideal Patio Cat Door (see pet doors ->manual->sliding glass doors).
Note that Ideal Pet Products are also marketed as "Perfect Pet Products".
Note The Ideal Cat Door is used in the Ideal Cat Panel for sliding glass doors and in the Ideal Cat Sash. However, the manufacturer trims the frame in the process. If you need to replace the cat flap portion in one of these units, be sure to tell us and we'll make special arrangements to have your unit trimmed. Sorry, but we cannot do this with sale priced units.
Ideal Cat Flap Installation Instructions

Tools required for installation:
Straight edge/ruler . Drill . 1/2 Drill Bits . Key Hole or Scroll Saw . Phillips Screwdriver
Simple 6-Step Installation
Letters in ( ) correlate to diagram above:
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Step #1:
Determine pet door height. The distance between bottom of door and bottom of template should be 6". Center template (width) in middle of door and tape in place.
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Step #2:
With template in place (A), draw around edge of template onto door. Mark corner holes with a nail or awl.
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Step #3:
Using corner locations as your guide, drill four individual holes, using a drill no larger than 1/2".
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Step #4:
Starting on the inside of one of the drilled holes (B), cut just inside of the line using a key-hole or scroll saw.
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Step #5:
Insert inner frame (C) (with flap) into the opening from interior side (inside and outside frames have been clearly marked for easier assembly). Make certain frame is flush with door surface. Caulking is recommended under outer frame. Place outer frame (D)(no flap) into opening from outside door, hold in place, then install screws and tighten until snug. Do not over-tighten.
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Step #6:
To use the Four-Way Lock, see instructions on Cat Flap frame.
Uneven surfaced doors:
After cutting the rough opening, build up the lowest areas with wood frame thick enough to create an even door surface. The Cat Flap can be installed in walls, steel doors, and storm doors. Note that additional materials, such as wood framing, plaster, touch-up paint, longer frame screws, and extra tools may be required.
Walls:
Once wall opening has been made, it will be necessary to build a frame to cover the exposed area between wall surfaces. Use wood screws to attach interior and exterior frame to wall surfaces. When cutting through walls, extreme caution must be used to not cut any concealed electrical wires, gas lines, or water pipes.
Steel doors:
Use a jigsaw with a hacksaw blade to cut the opening, starting at pre-drilled corner holes.
Ideal Pet Products Limited Lifetime Warranty
We believe that our pet doors are the most durable on the market. That's why we were the first to offer a Limited Lifetime Warranty in workmanship and materials. All defective parts will be replaced free of charge. Limited Lifetime Warranty applies to the original purchaser only, with proof of sales receipt. Excludes flap or breakage of the glass panel.
A replacement part will be sent when we receive proof of purchase and a check in the amount of $10.00 to cover shipping and handling, payable to:
IDEAL PET PRODUCTS, INC.
24735 Ave. Rockefeller
Valencia, California 91355
Attn: Pet Products Warranty Dept.
This warranty is void if damage to material is due to improper installation or intentional abuse.
As with any home improvement project, if you do not have the tools or skills to properly install your pet door, we suggest using a professional handyman or licensed contractor.