Like the regular One-Touch, the 150's "tension-mount" design allows you to attach it to a doorway/hallway opening to keep your pet confined to his own "special" area. The gate door allows you to move freely from room to room. The "one-touch" handle design provides the option of opening/closing the gate with one hand. Beautiful Hardwood Construction Complements Richell's Other Fine Wood Pet Products. Gate Fits Openings 32.1-inch to 62.8-inch.