Dragon Pet Door for Aluminum Sliders (One Piece)- Installation Instructions

Installation Instructions

Click to view the Two-Piece Sliding Glass Pet Door Panel Instructions.

installation video image
Installation icon Difficulty Easy
Installation icon Steps 04
Installation icon Time Required 0.5 Hours
Installation icon Sections 03
Installation icon Flags 02


  • 1 Panel Pet Door with a Pre-Installed Dragon Pet Door
  • 1 Foam Weather Strip Seal
  • 1 C-Clamp Lock
  • 1 Locking Cover


  • Flathead Screwdriver

Please read instructions & notes thoroughly before installation.


Step 1 Adjust the Top Piece

  • Loosen the height adjustment locks at the top of the panel with a screwdriver. This allows the spring mechanism to move freely up and down.
  • Watch out, it might jump at you the first time!

Step 2 Test-Fit the Panel

insert panel into track
  • Do not install the weatherstripping before test-fitting the panel.
  • Insert the panel into the top track of your framing, push the panel into the spring mechanism and swing the bottom of the panel up and over the threshold into the rail at the bottom.
  • If you can't quite clear the track, try swinging in from the outside as the outside track wall may be shorter.
  • If the panel still doesn’t fit, see the FAQ for guidance.

Step 3 Apply the Weather Stripping

apply weatherstripping
  • Once you have confirmed the panel fits, remove the panel from the track and lay it on its side.
  • Apply the foam weather-stripping by peeling back the paper and exposing the adhesive. Unroll it along the edge of the panel, pressing to ensure it adheres.
  • Use scissors to trim the strip to fit the length of your panel.
  • Flip your panel around to apply on the other side.

Step 4 Install the Panel

insert panel into track
insert panel track
twist thumbscrews
  • Place the panel back into the sliding glass door, then tighten the height adjustment locks to lock it in place.

Dragon Locking Details

Since you cannot lock your sliding glass door to your panel pet door, we have provided you with an alternative locking method to secure your home.

Installing the Clamp Lock

  • This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement.
  • For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.
install sliding door clamp

Locking the Flap

  • The Dragon Pet Door comes with a secure locking cover to block access to the flap when needed.
  • The locking cover is a great perfect for keeping pets inside at night, or for blocking access to the flap when you're away.

Alternative Locking Method

  • A great alternative to locking your sliding glass door is a Charley bar or dowel in the track.
  • Both work off the same concept—they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
charley lock in door


What if my panel is slightly too tall?

You can trim up to 3/4” off the spring- loaded adjustment piece at the top. This can be done by removing the adjustment pieces with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low or you will not be able to put the top back on.

spring loaded adjustment piece

The dark area marks where you can trim:

where to trim adjustment piece

What if my panel is slightly too short?

We offer height extensions that will add 3/4” to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.

You can also make your own extension out of nominal 1” wood (which is 3/4” thick), such as a 1x3, if you need more than 3/4" in height. Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.

height extension on door panel

What if the panel is wobbling slightly back and forth?

If your track is wider than 1” you can use small wooden shims or extra weather-stripping to fill in the gap inside the top and bottom tracks. By placing the material inside the tracks you won't be able to see it, but it will stabilize the panel.