I am in desperate need to get a copy of the manual/specifications for a Preway built in fireplace Model #136. The dimensions are front =42in wide with 8 inches on either side of the firebox, 24 1/4" deep 58" wide on back wall. My e-mail address is sternjessie@yahoo.com. Can you please e-mail me a copy of a manual for this fireplace. I believe the unit was manufactured in the early 1970's. Thank you very much. Sincerely, Jessie Stern (845) 590-9887 Cell #