Steel bullet traps are generally larger in size than their rubber trap counterparts in order to accommodate proper angles to slow down fired rounds and avoid ricochets. Average length of GRC’s steel trap is 20 feet plus the range should allow for an additional 4 feet behind the trap for access to conduct maintenance and lead removal. For pistol rated (only) ranges GRC has a steel trap design that requires only 7 feet of depth and does not require a space for rear entry. General height for all GRC steel type bullet traps is 8 feet.