Endura Flap Single and Double Flap Pet Door for Thick Walls (E2 Design) - Installation Instructions

Difficulty High

Steps 13

Time Required 2-3 hours

Sections 04

Flags 02

Read instructions & notes thoroughly before installation. We recommend a licensed, bonded and insured contractor do this work.

Step 1 Measure Your Pet

Measure your pet and make a mark at least 3” above your pet’s height on your wall, this will line up with the top of the cutout.
Depending on pet height and the height of your baseboards you may need to cut into the baseboards to install the frame. If you want to avoid that, make sure to set the height accordingly.

Find a location clear of plumbing, electrical and other obstructions. If you have stud construction choose a spot against one stud when possible.
Use the included cutout template to mark out the rough opening in the wall. Make sure your lines are level. This cut out will leave space for the included tunnel material.
Double check your template dimensions with the chart before cutting into your wall.

Cut through your wall with the appropriate tools.
In some cases, you may have to cut and brace a stud. See local building codes to ensure this is done properly. We recommend hiring a professional if you are unsure what to do.
Remove insulation inside the wall as needed. You can save some to put back into open areas of the wall cavity.

Create the full size tunnel liner box by assembling the tunnel material with all the painted edges facing the same way
Attach the pieces with the provided medium wood screws as demonstrated in the diagram.
Pre-drill the holes to avoid splitting the plywood.

Slide tunnel box into opening until the inside of the box is flush or slightly inside the surface of your inner wall. Mark a line all around the box at the outer wall. Remove the box from the wall.
Relocate the tunnel box screws so they are all within the usable area of the tunnel. Cut off the excess tunnel material line.
Cut just inside your line to make sure the tunnel does not end up sticking out of the wall after installation. It should be flush or just inside the wall surface on both inside and outside.

Insert the tunnel liner box into the rough cutout opening. Use the provided shims to get the tunnel level and square.
Use the provided long wood screws and/or concrete screws to attach the tunnel box to a nearby stud, brick, concrete, or bottom support.
Trim off shims flush to the wall. You can score with a knife then snap them off.
If you are installing your tunnel into or against concrete, you may need a moisture barrier. Check your local building codes for more information.

Make sure that the spray foam sealant is dry and that the tunnel area is clean.
The edge of the sealing tape should line up with your inside wall. For deep walls, you will need to use multiple layers of tunnel tape, overlapping 1" on each piece to cover the entire tunnel. Make sure to have at least 1" of tape overhand the outside wall.
To apply the sealing tunnel tape, start at the middle of the upper tunnel and apply the tape all around the tunnel, ending with a slight overlap at the top. Make sure to press the tape tightly into the corners as you go.
Once in place, firmly apply pressure all along the tape to activate the adhesive.

Cut each corner up to the outer wall.
Fold back each piece of the sealing tape against the outer wall, pressing firmly.
Apply caulking to the openings in all four corners, sealing the cut area of the tape to the outer wall.
The sealing tape will be trimmed in a future step.

Make sure the four tabs are upright and snug to the inside frame. You may have to loosen the screw to rotate it into place using a Phillips screwdriver.
Insert the inside frame and level it in the opening with the hole transfer jig. While holding the frame flush against the wall, use four wood screws to screw the mounting tabs to the inside of the tunnel.
If there are larger gaps you can pre-bend the mounting tab toward the tunnel.

Repeat installation step #10 for the outside frame, making sure the flap(s) swing through both frames without interference.

From the outside, apply silicone in the tunnel, around the sides and bottom edges of the inside frame. This will seal the tunnel tape to prevent water intrusion.

Use a sharp razor blade to trim off any excess tunnel tape that is sticking out past the outside frame on all four sides.
Apply silicone where the outside frame meets the exterior wall on the top and sides, but leave the bottom open to allow for drainage.