Personally, I see no reason why you can't cut that out, unless it would affect the structural integrity of the cabinetry.which it shouldn't.
The rear panel is likely 1/4" thick. I've never seen a complete 3/4" back, only 3/4" cleats the cabinet gets attached to the wall through.I'm installing a built-in oven in an 80" high pantry cabinet. The oven installation instructions say to allow a minimum cutout depth of 23 1/2". The cabinet depth is 23 3/4", but that includes 3/4" for the rear panel, so the interior depth is only 23". I can add a face frame if necessary, to provide another 3/4" of depth, but I'd rather not do that for aesthetic reasons (none of the cabinets have face frames now). Any reason I can't (or shouldn't) remove the back panel from that section of the cabinet? The wall behind the cabinet is standard sheetrock.
The rear panel is only 1/8" thick, dadoed into the side panels. There's a 4" wide by 5/8" thick cleat behind it, across the top of the cabinet. There's no cleat in the area where the oven will be mounted.The rear panel is likely 1/4" thick. I've never seen a complete 3/4" back, only 3/4" cleats the cabinet gets attached to the wall through.
If you have to cut a cleat, I'd add additional bracing above the area, especially for a frameless cabinet at the end of a cabinet run.
Where is the cabinet situated? Cabinets on both sides or on the end?The rear panel is only 1/8" thick, dadoed into the side panels. There's a 4" wide by 5/8" thick cleat behind it, across the top of the cabinet. There's no cleat in the area where the oven will be mounted.