Midea Duo Adapter for Sliding Doors

This lets you use a board to put your Midea Duo in a sliding door. Does NOT work with non-Duos as it is wider. The idea is to extend the panels for the Midea duo using a wooden plank so that it fits the length of a sliding door. The adapter screws onto the edge of a board and fits into the Midea panels. This project involves some woodworking and assembly. Treat this more as a project log, but feel free to follow along / modify the part to your needs. I can't guarantee that this will work well for you given the number of challenges I faced. 

You will need: 

• Some board to mount the adapter onto
• Woodworking equipment
• No 6 ~ 1 ½" screws
• Drill
   

I initially wanted to print extra Midea “panels” so that I could stack them up in the sliding door - unfortunately, this had several issues, with the biggest one being that this was a huge floppy piece of flimsy plastic. As a result, I opted to find something more stable and quicker to print, as 2-3 220mm tall Midea panels would take around 2 days to print on an X1C. 

I went to Home Depot and picked up some S4S poplar that is around 12" wide, approx 1" deep and some length tall (maybe 18"?).  Turns out, despite it being “S4S,” the board was not square and needed to be jointed along its side and edge to make it square. You could get around this using some weather stripping but it's not ideal. 

I had to rip (cut along the length) of the board to get it closer to the width of my Midea panels (~248mm wide) as well as plane the board to fit well within my sliding door. The latter was not super necessary but this allowed it to fit into the tracks of the door rather than sit on top of them. 

I printed the adapter with a good number of walls standing up (~5) and with 40% infill in ABS - I'm sure PLA or whatever else would be sufficient, especially since it doesn't get super hot here nor is it exposed to a ton of light. It is also not subjected to any significant forces besides the screws. I used the adapter as drilling template on the top of the wood to drill out ~2.6mm holes for the no 6 screws. It is worth noting that the adapter allows for 10mm of side-to-side adjustment, so I had positioned the adapter to one extreme and drilled towards that edge. 

I dropped the bottom half of the Midea panels (including the hose duct) onto the adapter, aligned it to where I wanted it, then fastened the No 6 bolts down. Don't torque them too much since you're squishing the plastic, plus screwing into end grain isn't the greatest practice. I then put this in the doorway, added the upper half of the panels, then adjusted the pegs till the stack completely fit the height of the door. The door was then slid closed ensuring that everything had a snug fit - window sealing foam could help, but it was not necessary in my case.