Fleetwood Owners Club

Hi,
I have a garland 165/4 dated 1996 I think and the water heater is missing from under the seat. The problem I have is all the heaters I can find have large square outlets and on this it’s quite a narrow rectangle outlet.
Does anyone know what heater it should have or does anyone have one?
Thanks
Adam

The sales brochure says that in 1996 the Carver space heater fitted in the Garland range was described as a 1800s, except for the 185 layouts which had a 3000.
Hope this helps.