Bison Aluminum Player Benches Without Backrest Fixed or Portable Benches are available as either in-ground fixed models or wide-base, freestanding portables...but these benches do not have a backrest Bison Aluminum Player Benches With Backrest - Item e147013 Bison Upgrade Bleacher or Bench Aluminum Planks To Powder Coated Colors- Item e204745 Bison player benches have 100% welded aluminum support structure. 21' length for fourteen player capacity, 15' for ten players or 7 1/2' for five players. Four 2" square supports on 21', three supports on 15' and two supports on 7 1/2'. 2" x 10" x .08" minimum cross section anodized aluminum seats and backs. Planks have end caps for a finished look without sharp edges. Fixed models require a 30" concrete footing to install in-ground for lasting, safe, weatherproof seating. Portable models are constructed to provide a nearly tip-proof bench to transfer from football field to soccer, baseball or softball fields as seasons change. Portable benches can be used with or without rubber feet provided, can be anchored to ground or can be bolted down to courtside surfaces. Bison Five-year limited warranty on structure, two-year limited warranty on all seats and backs.