Liberty Bed Standard Grid with 4 Locking Casters. Strong supportive grid deck is superior in frame design and offers a “no-sag" mattress support surface. Range of motion 9.9 inch to 24.4 inch. With a standard 6” mattress, this positions the bed at an ideal height for the caregiver and for transfers. One bed can be used for 76" and 80" lengths using the adjustable brackets to meet space limitations and improve inventory management. No extension kit is necessary. Resident friendly, quiet, smooth operation keeps bed level and balanced at all times using three DC motors. 360 degree mobility at ANY height can move from room to room at any height, and move over thresholds at even the lowest position. Mattress retainer is standard. Reinforced, robust base is designed for support yet provides sufficient underbed clearance, ideal for using overbed tables and patient lifts. Easy assembly requires only a Phillips head screwdriver. Four Locking Casters secure the bed at any height. Antimicrobial kills more than 99.9% of odor and stain causing bacteria. 450 lb. weight capacity