I searched Cabinet Door Struts: https://tab-rv.vanillacommunity.com/search?adv=&search=Cabinet+door+struts&title=&author=&cat=all&subcats=1&tags=&discussion_discussion=1&comment_comment=1&discussion_poll=1&within=1+day&date=
I have used these and had good results. RV Designer H279, Door Support Strut, Plastic and Metal, Spring-Loaded 6-1/4 inch, 2 Per Pack, Cabinet Hardware