This model fits a free standing Home Depot Hampton Bay Umbrella stand. Does not need supports just orient this on the top and will print without issues.
I did print this in PLA, all I had at the time and primed and spray painted it yellow. I could see this being printed in PETG but after 2 years I have not had any issues or warping.
I did use about 15% infill at the time of printing this just to make the cap have some more density. The holes around the circumference of the model was so that you do not have multiple locations to line up with the slide lock.
Here is the Product on Home Depots Website that this was modeled for
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.