electric bed 1,Function: backrest & thighrest adjustment, HI-LO ... ,large air-bleed hole design,well-ventilated.4,ABS head and foot boards formed by injection molding,nice ... ,easy and reliable operation.6,Silent casters(optional),with opposite angle fasterners,flexible rotation and easy operation. ... 7,Full-enclosed motor with strong thrust,low noise,waterproof and dustproof.8, ...