Grade

BHMA (Builders Hardware Manufacturers Association) is accredited by the American National Standards Institute (ANSI) to develop and maintain performance standards for builder's hardware. ANSI/BHMA standards set forth different product grades for door hardware products. These product grades are defined by progressive levels of performance benchmarks in each applicable standard. The purpose of each is to help identify the quality and durability of locksets through a series of operational and security tests. Following is an explanation of the grades of door hardware products.

Grade 1

• Meets commercial building requirements.
• Provides the best security available.

Grade 2

• Meets light commercial and exceeds residential building requirements.
• Exceeds standard residential security requirements.

Grade 3

• Meets residential building requirements
• Provides standard residential security
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Function

Door hardware is available in a variety of functions to meet the varied needs of homeowners.

• A single cylinder deadbolt is typically used on a front or back exterior door and is operated with a key from the exterior of the home and a thumb turn from the interior.
• A double cylinder deadbolt is typically used on a front or back exterior door and is operated with a key from both the exterior and interior of the home. Double cylinder deadbolts are recommended when a window is in close proximity to the door. The interior keyway prevents an intruder from accessing your home by breaking the glass and turning the thumb turn to open the door.
• A keyed product (handleset, knob or lever) is generally used for exterior applications. It is operated with a key from the exterior of the home and a turn button or turn knob from the interior.
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Privacy

A privacy knob or lever is generally used on a bathroom or bedroom door. It provides a turn button lock or turn knob on the inside and comes with an emergency release on the outside that allows the door to be unlocked by inserting an emergency release tool.

A passage knob or lever is generally used on closets or other rooms that do not require locking.

Dummy

A dummy knob or lever does not operate and is often used as a door pull or for aesthetic purposes only.

Latch and Strike

The latch and strike configuration consists of three parts.

1. The Latch - the mechanism that throws the bolt when the knob or lever is turned. There are three types:

• Plain - a 1/2" beveled latch used primarily for interior doors only (passage and privacy functions).
  Spring
• Deadlocking - a 1/2" beveled latch with a deadlocking bar used for keyed functions. The deadlocking bar prevents the latch from being forced back and deters credit card entry.
• Deadbolt - a 1" throw bolt that locks into position and cannot be forced back. Includes a free turning hardened steel roller to prevent saw through attempts.
• Adjustable Latch:
  Most Weiser products come standard with an adjustable latch, allowing the hardware to be used on doors prepared with either a 2-3/8" backset or a 2-3/4" backset. (The backset is the measurement from the edge of the door to the center of the pre-drilled hole.)
  Adjustable Latch
  2-3/4" backset
  Adjustable Latch

2. The Faceplate - the metal sheet that surrounds the bolt and is mounted to the door edge. There are three types:

• Square: square corners
• Radius: rounded corners
• Drive in: a circular ring around the bolt
• Universal - latches that utilize interchangeable faceplates are referred to as universal or 6-way latches. Universal latches include a drive-in latch and both square and radius faceplates that can be attached to the latch to simulate a fixed faceplate latch. The 6-way latch designation comes from the 6 different door requirement combinations that the universal latch will accommodate (i.e. 3 door configurations x two backset options each = 6 ways to utilize).

3. The Strike - the metal attachment that is mounted onto the doorframe. There are many different types.