Air Pressure Sliding Door Closer 38'' Hold Open Aluminum Product Automatic and Buffer Close for Door Travel 36''~37.7'' Wood ,Glass Door Residential or Commercial

Returned item. Not enough power. Quit after 2 days.

Arrived quickly and is made of mostly metal, as advertised, with the exception of the plastic clips that hold the tube to the door frame. I also have a very large and heavy (36" widex 80" high) sliding glass/wood door, but the rollers on the door are good and there was little resistance operating it before installing this. I ordered the 36" opener which seems to match up well. Because of my particular door configuration, I had to mount this on the outside, instead of the inside of the house. I just installed it a few minutes ago but I can tell it is going to need some tweaking to get everything perfectly aligned. The closer naturally adds some resistance on opening, which is understandable. It is also very cold out today, so that might also explain why it has some trouble closing the door the last 1/2 inch, despite adjusting the "speed" knob to maximum. Also, calling it "Speed" is generous, as it closes VERY slowly even at "max" speed. I was expecting a little more strength to this closer, but I'll give it a little time to warm up and break in (and play with the adjustemnets some more) before passing final judgement.

To weak to close my door