Publish Time: 2022-05-30 Origin: Site
The standard backset tubular passage door latch is designed for use with square spindle door knobs. It features solid brass face plates and strike, and has heavy-duty components. It is available in a variety of finishes. The tubular latch uses a 5/16" spindle. Designed for use with standard square spindle door knobs, the latch is suitable for both interior and exterior doors. There are some important things to keep in mind when choosing a backset tubular passage door latch.
Before buying a latch, make sure to measure the backset of the door. This measurement is the distance from the edge of the door to the latch's spindle mechanism. The standard case measurement for tubular passage door latches is 63mm, while those measuring 76mm will have a 65mm backset. When purchasing a backset door latch, consider the backset measurements and case diameter when making your selection.
Backset tubular passage door latches should be fitted farther from the edge of the door frame than the door handle. A 4 inch case size is recommended for door knobs, and a 3 inch case size is acceptable. In addition, most door knobs are unsprung, so a double-sprung tubular latch is required. For doors with glass panels, use the backset to position the lever handle in the middle of the stile.
A double-sprung tubular latch is a high-quality option. It offers years of smooth operation. The separate springs in the levers help the latch return to the horizontal position. A double-sprung latch has a longer lifetime than a single-spring latch and is therefore a good investment. However, if you're on a budget, it's better to go with the economy model. But it's important to remember that these aren't permanent solutions.