These two cabinet racks adhere to NEMA 12 and IEC 529 IP 55 requirements. The cabinets have been tested and listed under UL-508 12 for use in both the USA and Canada. Catalog number NR-10025 internal panel space dimensions are 19.00 inches × 70.00 inches with the clear inside (usable) depth of 29.25 inches. Catalog number NR-10026 has internal panel space dimensions of 19.00 inches × 78.75 inches with the clear inside (usable) depth also 29.25 inches. Both of these racks come complete with frames, locking front and rear doors, externally removable side panels and four adjustable panel mounting rails suitable for either 19 inches or 23 inches panel width equipment.