Standard Bore Height For Door Handle

The most likely explanation is that as we began to mass produce doors the centre of most middle rails in the typical drop panelled door was 36 inches from the bottom of the door.

Standard bore height for door handle. Standard height the standard height for doorknobs on a typical 80 inch tall household door is 36 inches. The requirements of bs 8300 provide for a door knob to be between 800mm 1050mm 31 5 41 5 inches from a finished floor. The latch bore is the small hole on the edge of the door for the latch itself. The standard measurement for a bore hole is 2 1 8 inch in diameter and the standard measurement of a cross bore is 1 inch in diameter.

The bore hole is the large diameter hole where the door knob is mounted. Their position should be between 900mm 1050mm 35 5 41 5 inches above the floor. Generally the knobs should be of a free moving slide action. The height of the door handle is not so much the problem as the door handle itself.

The international building code has established doorknob height between 34 and 48 inches above a finished floor. Fortunately the standards for ada door handle height are not much different than traditional recommendations. Why this is standard is not certain. The standard sized bore hole is 2 1 8 in diameter.

This cross bore is where the latch is installed. Most interior doors are prepped with a single boor hole. Through the edge of the door there is a 1 cross bore that extends from the edge of the door through the bore hole.