A power rack powerlifting system requires 11-gauge to 7-gauge steel (3mm to 4.5mm wall thickness) with 3x3-inch tubing to resist dynamic loads of 500-600kg during squat reracks. Westside hole spacing provides 1-inch intervals through the bench press zone (30-50 inches from floor) for precise J-hook positioning, transitioning to 2-inch spacing elsewhere. Premium racks offer full 1-inch spacing floor to top. Hole diameter should be 5/8-inch or 3/4-inch for standard pin accessories. Base stabilizers must extend at least 12 inches forward to prevent tipping; cross-bracing between uprights eliminates lateral sway. Welded racks are stiffer than bolt-together designs, though high-quality bolt racks using grade 8 bolts achieve 95% of welded rigidity.

Safety systems include pin/pipe safeties (rated 2,000+ lbs, robust but slow to adjust), flip-down safeties (adjustable without removing the bar, potential pivot bolt wear), and strap safeties (nylon webbing with 15,000+ lb tensile strength, quiet and bar-friendly but with 0.5-1 inch stretch). For squat, set safeties 2-3 inches below bottom position; for bench press, 0.5-1 inch below chest. J-hooks require UHMW lining (1/8-1/4 inch thick), 15-20 degree angled throat, 1.5-2 inch hook depth, and locking lip. Replace UHMW liners when grooves exceed 1/16 inch. Monolift attachments ($800-1,500) eliminate walkout by swinging arms forward after unrack, essential for squats exceeding 400kg.

Minimum space per power rack: 8 feet wide × 10 feet deep (80 sq ft). Position racks back-to-back with 12-inch gap between rear uprights. Ceiling height must accommodate overhead press (84 inches minimum, 96 inches for tall lifters with 45lb plates). Selection matrix: entry-level ($1,000-2,000) for sub-500lb squats uses 11-gauge 2x3-inch; mid-range ($2,500-4,000) for 500-700lb squats uses 11-gauge 3x3-inch with Westside spacing; high-level ($4,500-8,000) for 700-1,000+lb squats uses 7-gauge 3x3-inch with strap safeties and monolift compatibility. Verify load capacity with third-party test reports (MET Labs, TÜV SÜD)—claimed capacities without testing are unverified.