We have the 3685FL. The cabinet above the refrigerator and the one above the TV have the upward opening type doors. I got tired of using my head to hold the door open so I bought the struts that Camping World sells. The struts come in a variety of sizes. They were fairly inexpensive. I think I paid around $10 for the one to hold the large door over the refrigerator open and about $6 for a pair of smaller ones to hold the door over the TV open. They were easy to install. It took about 30 minutes to do both.
Since I’ve put the struts on the door above the refrigerator Pat has rearranged things and taken out the kitchen items because it’s too high for her to reach without a step stool. Now extra pillows and blankets are kept in there. Of course she couldn’t have done that first
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Bill