Bison 21' Standard Aluminum Portable Outdoor Bleachers
Engineered for long-term, low-maintenance performance, these Bison Weatherbeater bleachers offer reliable outdoor seating with durable, eco-friendly features.
• Equipped with recycled plastic ground runners that won’t rot like traditional wood, keeping the frame off grass or dirt
• Available in 7½′, 15′, or 21′ lengths with options for 3 or 4 tiers (2-tier model only available in 15′)
• Heavy-duty 2″ x 10″ anodized aluminum seat planks with capped ends for safety and a clean look
• 100% aluminum welded support frame for strength and longevity
• Assembled with corrosion-resistant, zinc-plated hardware
Warranty
• Five-year limited warranty on the structure, two-year limited warranty on seat planks