The Channell BULK 1 series is an upgradable, re-enterable cable management vault (grade-level box) system with a nominal 11" x 18" footprint and multiple depth options (6", 12", 18", 24"). The system is designed so one universal body can meet light, medium, and heavy duty applications by changing covers or rings; shield-style (Tier 22) lids are a listed cover option. See the manufacturer's BLK1 spec sheet and the BULK specification guide (both linked in sources) for full configuration and part-number matrix details.