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A butterfly hinge—also known as a surface mount hinge or dovetail hinge—is exactly what it sounds like: a hinge that resembles a butterfly. This type of decorative hinge, which is mounted on the surface of a door or cabinet, consists of two panels. One panel is mounted on a stable surface like a door frame and the other is mounted on the surface you need to open. It hinges open and closed like the wings of a butterfly.

A door frame is not the same as a door casing. A door frame is the framework surrounding the entire door that supports the area from which the door hangs. The frame is made up of multiple parts, including the door jamb, head, and sill.

Casing refers to the trim work located around the door frame. It connects the door frame to the wall with decorative trim.

Security experts recommend deadbolt locks as the most secure option for a house's exterior or entry doors. Deadbolts provide the best security because they can prevent most types of forced entry and are harder to lockpick. Common types include the standard single-cylinder deadbolt, which is often found on front doors. For enhanced security, you can opt for a double-cylinder deadbolt, which requires a key to operate from both the inside and the outside.

On average, sliding glass patio doors can last between 20 and 30 years. Their actual lifespan depends on several factors, including proper installation, frequency of use, and regular maintenance of the sliding components. While this is the typical range, minor problems and the need for occasional repairs or part replacements can still occur. Addressing issues as soon as they arise and performing regular maintenance will help extend the door's life. If the door is older and requires frequent or significant repairs, it may be more cost-effective to replace the entire unit.