Meets and exceeds the Hospital Bed System Workgroup report alternative dimensions and assessment guidelines provided along with the FDA.Fits Hospital Bed or home bed with steel frame:77701 Halo Safety Wing - Single Mount for hospital bed77702 Halo Safety Wing - Double Mount for hospital bed77121-W1 Halo ALC Wing, Single-Sided Mount for Boxspring and Mattress Beds77121-W2 Halo ALC Wing, Double-Side Mount for Boxspring and Mattress Beds