Gas bottle size

[skipj]

I have a 25' 89 excella trailer. I need to replace the valve on one bottle with one purchased thru the Wally Byam club plan. My question is how can I determine the size of the bottle. They are aluminum but are they 30# or 40#. I assume 30 but can't find any size markings.
SkipJ

[74Argosy24MH]

How tall is it?

John

[InsideOut]

Compare yours to the sizes shown here.

Shari

[skipj]

Mine is about 26 1/2 high so it's a 30 pounder.
Thanks very much
Skip J

[Ultradog]

I have the 30# aluminum tanks on mine and they were both empty when I got it.
So Saturday I brought them to the propane store and had the new valves installed and then filled
The $80 total bill made me wince a little at the time but after looking at the $135 price of new tanks (plus shipping) I consider myself lucky now.