Gee jyr I have in my Wildwood 337BAR an electric fireplace.It states in the manual that came in our Forest River package it must be connected to a 3 prong 120V properly grounded outlet,a 15 amp circuit breaker.The cabinet cut-out looks to be 21 7/8 H x 26 1/2 W x 6 1/2 d.This model from Forest River is a vendor for assembly line so there is a good chance if their was a option on your unit to include a fireplace the wiring harness may be or the outlet may be back behind the wall.This model is manufactured by Greystone and the model number is WF2613L,it comes with 4 buttons.1)Flame brightness 2)heater setting with 7 temp setting's 95,90,85,80,75,70,65. 3)Timer so that it will remain on till the timer runs out inwhich a cool down will occur followed by a shut down by it self.Greystone's website may have this installation manual,or WAY Interglobal Network,they are out of Hart,Indiana.Just down the road from FR assembly plant.Phone 574-971-4490.Hope this helps in that cozy fireplace setting you are looking for.