Royal Mail Large Letter Boxes 337 x 236 x 19mm Maltese Cross C4 2 Working Pressure - 56 bar

Working Pressure - 56 bar @ 20 degrees C

Type of Powder - Refillable ABC Dry Powder

it tackles multiple fire types effectively

5mm for added strength

making it ideal for offices

Royal Mail Large Letter Boxes 337 x 236 x 19mm Maltese Cross C4 2 Working Pressure - 56 barInternal Dimensions 337x236x19mm (13. 2"x9. 3"x0. 9"). External Dimensions 349x249x24mm (13. 8"x9. 8"x1"). Royal Mail Maximum Large Letter Size. Single Wall Large Letter Postal Mailing Cardboard Boxes are specifically designed to meet Royal Mail's 'large letter' guidelines, significantly reducing postage costs. Engineered for maximum operational and postal efficiency, these boxes feature a Maltese cross design, making them extremely easy to