GE Industrial Panel board enclosure is suitable for use with 34.5 - 37.5-Inch AD Plus lighting panelboards, 42-Circuit 125-Amp/30-Circuit 225-Amp/12-Circuit 400-Amp main lug interior and 42-Circuit 100-Amp/30-Circuit 225-Amp main breaker interior. It comes with blank endwall. This enclosure has NEMA 1 rating for added safety. It measures 20-Inch x 5.81-Inch x 37.5-Inch.