120 mins fire protection. Cash Rating: £2,500. Available in three sizes. The Phoenix 4620 Series offers unrivalled protection for your irreplaceable computer media and backups. Double door construction with inner door fitted with twin water resistant seals and outer door fitted with high quality intumescent seals. Fitted with high security electronic lock, programmable with users own code up to 16 digits. Automatic locking on models 4621 & 4622.