The heaters have a automatic shutdown when it senses a lack of oxygen, probably would leave in front of a vent or open window. Also will have a CO alarm.
Got started on the other side early today,
Made a cardboard template for the backsplash.
Laid it out on the diamond plate and transferred the layout.
Fit perfect! (with a little trimming)
Used a FRP trim piece for the exposed joint, cabinets will cover everything else.
Looks factory! just have to glue it all together now.