The Arcorail includes a hand rail section offering two handle heights and will fit standard or pillow top mattresses in king, queen, double, single and twin beds with angle iron frames. The Arcorail system offers mobility, support, security and convenience. It is the perfect bed accessory for getting in and out of bed and repositioning while in bed. No tools are necessary to attach the Arcorail to the metal bed frame. It fits homestyle bed frames which measure 1 to 1.75 inches (2.54 to 4.45 cm) in height. (Regular Home Style beds have ANGLE IRON FRAMES that are horizontal and flat at the bottom.) The Arcorail is lightweight, yet strong and sturdy. The height is easily adjusted and the bed can be made with the rail in place. The Arcorail handle rotates 360°. The Arcorail is not intended to support the full weight of the user and is suitable for people weighing up to 300 lbs (135 kg).