B-Line Eaton series mounting panels, White powder paint, Steel, Used with 72" X 36" enclosures, Large flanged panels

Yes. The AW7236P is the flanged steel back panel sized for 72 inch by 36 inch enclosures. The panel itself measures 68.87 inches by 32.87 inches, so it sits inside the enclosure box with clearance at the sides and top for the mounting studs or brackets rather than filling the full 72 x 36 opening.

68.87 inches by 32.87 inches in steel. If you are laying out DIN rail, wireway, or a drive footprint before the panel arrives, work to those numbers, not to the 72 x 36 enclosure size.

The AW7236P weighs 66.748 lb. That is a two-person lift into a wall-mounted or floor-mount enclosure, and worth planning rigging for if the box is already set and wired. Budget for it in your structural load if the enclosure is wall hung.

A flanged panel has its edges formed over, which stiffens the sheet so it carries heavier components (contactors, drives, transformers) across a 68.87 inch span without oil-canning. The AW7236P is the large flanged type for 72 x 36 enclosures. A flat panel is a plain sheet, lighter and fine for terminal blocks and light control gear, but it flexes more on a tall panel.

The AW7236P is noted to CSA C22.2. That is the certification carried on the panel record; for the enclosure's own Type rating, go by the enclosure nameplate, since the panel is an interior accessory to a Type 1 medium enclosure.

White powder coated steel. The white finish is standard for enclosure interiors because it reflects light and makes wire markers and component labels readable in a deep box. If you need a bonded ground path, land your ground stud on a scraped or unpainted point rather than relying on the painted surface.

Order it as the panel alone. Panels of this type mount to the studs or clips already in the enclosure back, so if your box is new the hardware ships with the enclosure; if you are retrofitting an older box, reuse the existing nuts or source panel mounting hardware separately.