Lockable DVR NVR Enclosure Safe Lock CCTV Recorder Box Vent. This is a heavy-duty security lock box for DVRs, VCRs, and similar electronic equipment. The durable 16 gauge steel construction along with the locking door keeps your equipment safe and prevents any tampering. The built-in fan keeps the temperature down and your equipment from overheating. 16 Gauge Heavy Duty Steel DVR Lockbox.Fan and Power Cord included for superior cooling. Knockout holes removable rubber plugs allow desired wire placement without compromising the security of the lockbox. Both sides ventilation for unrestricted airflow and effective cooling. Comes with mounting bolts, rubber plugs, power connector for the fan, and a set of keys. We will respond to you within 24 hours and do our best to help you out!