OK, here are some figures for all who asked:

Heat 5200 BTU
Fuel Consumption .25lbs/hr continous (Vanagon Westie tanks are approx 10lb)
Power 1.5amps@12 volts continous 
(These continous figures mean that is the consumption rate when it is so cold
the thing is working full time. If the thermostat is cycling on and off,
your consumption will be lower)
Heated air volume: 45cfm
Dimensions: 360mmx160mmx100mm
Safety features:
Continuous flame monitoring
Thermal cut out for overheating
Prepurge clean out residual propane for starting
Postpurge cleans out un-combusted propane
Auto low voltage shut off at 10.8 volts
Fan only option (does not appear to have variable speed fan control-I'm
sure some lister can figure out and upgrade)
Low noise, quiet fan

Let me know ASAP!

Thanks,

Tom F.