Originally Posted by david-o
For what it's worth, my awning is 21' long and the part number printed on my gas struts is 3108392.139. Can any of you tell me if you have a similar length awning (overall weight could be a factor) and the same - or a different - part number on your struts?
I learned that Dometic also uses number 3310555.010 gas struts on some power awnings. Maybe that one is stronger? If more of you have the "331" strut then I should probably replace both of my "310s" with "331s".
Without the support poles, using the slot for (Heavy items, lights,sun screen,gutting a deer or moose,ect.) will pull the slotted arms down. I have the same struts & awning as you.If you really want to waste your time put ratchet straps on the ends of your awning and (Crank em down).Use support poles!