I do not have the measurments any more But what i did is measure the opening where the doors attach L and W then measure inside L W and D. . I have the receipt and book on the fireplace but it it in binder in our fiver up north. we will be going up there this weekend so i will find the information for you. I just cant remember off the top of my head so sorry.
I want to add that works awsome! when it is chilly at night with turn in on for the night and it keep the trailer nice and warm and the ambiance with out the heat is romantic
Oh also my DH took the shelves out, drilled a hole in back of where fireplace whould go and a hole behind the tv so it wont show and put in the fireplace and put trim around firplace to fill in the small gaps around it and then i painted the trip to match the oak