Yes, but may come with gas valve set up for Nat Gas and also the burner orifice.
Would need to be sure BOTH were for LP.
Measure your space and compare to size of new one.
Can buy online or local at any place that carries them and sells to general public.
IF there have been any changes or upgrades to home, go to www.HVAC-TALK.com
and look at top tool bar for HVAC-Calc and get it to do a homeowner Manual J Load Calculation to be sure you get correct size btuh needed now.
Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?