Door Hardware Grades Explained

By Brian Rhodes, Published Jan 13, 2013, 07:00pm EST (Info+)

How can you tell high quality hardware from junk? Unlike other industries, where 'buyer beware' dominates equipment selection, security door hardware is often tested on how well it actually performs. In this note, we take a look at these ratings, examine how they are applied, and help readers understand how to use them to select the right hardware.

Checking for These Ratings

*********, ****/**** ****** **** ** *********** listed ** *** **** ****** ** door ******** ********. *** ***** ***** shows * ****** ** *****:

International *********

*********** ******** ********* *********(****) *********** ******** ************* ***********(****) **** * ***** ******** *** evaluating **** ******** ***********, ***** '****** ****'. *** ** **** ******** ********* the ***** ** **** ******** ********** and **********, ********* ********** ****** ******* devices **** **:

*** ******* ******* *** **** ******** classifies ********, *****, *** ******** ********** into ***** '******' **** ***** * being *** **** *** ***** * the *****. *** *******, *************** **** locks **** **** ***** ********** ***** on ***** *********** **********:

  • ****/**** ***** *: ********* **** ******** 1,000,000 ****** ******* ********. **** ***** of ******** ** **** ******, *** is ******* **** ** *****-**** ********** applications.
  • ****/**** ***** *: ********* **** ******** 500,000 ****** ******* ********. **** ******** is ******* **** ** ***-**** ** light-duty ************ - ****** *****, ******* openings, *** **** *********.
  • ****/**** ***** *: ********* **** ******** 250,000 ****** ******* ********. **** ******** is ********** '*****-****', *** ** ********* employed ** *********** ************ *** ******* in ********** ***.

*******, ** * ******* ******* ** grade, **** **, ** *****, * yellow **** **** ********* *** ******* failed ** *** *** **** ********* to ******* ** ***.

*** ********** **** ******* ****** ***** on *** **** ** ******** ***** evaluated, ******** *** ***** ** ****/****** cycles, ***** (********) *******, *** **** plated ****** *******.

*** *******, ******** **** ***** *** A156.23 ********, ***** ***** ***** "**** passed ** *********** ****** **** ****, and * ******* ****** **** *** holding *****." **** ******** **** ** subject ** ********* *****, **** ********* it's *** ***** ** ******* ********. The ***** ***** ***** *** **** fixtures **** ** ***** ******** *******:

********* * ************* ** ******* ***** on ** '******* **********' ****, *** once ********* *** ************ ****** **** all ********** ***** **** ** ************ in *** **** ******, **** *** same *********, *** **** ** ******* to ******. *******, ** ******** **** Certification, ******** ***** *** ************ (*, 10, ** ** *****) **-****** *** evaluated ** **** ****/**** **** *********.

Not ********, *** ******** **********

*** *** ******** ******** *** '***** rated', *** ******* ** *** ********* in ***** *** * ******* ** be ****. ***** '**** ******' ** often * ************* ****** ** *** documents *** ****, **** **** ******** products (********** ***** ** *** ***********/*********** market) ** *** ******* *** **** ratings.

**** **** *** ****** **** **** hardware ** '*** *******', ******* ** does **** ***** ** *** * given ******* ***** * ******. **** 'world-class' ********** ******** ******** *************, ************* *****, *********-**** [**** ** ****** *********], and************* ***** *** ***** ***** *** use ** ** ******** **** ********. Even ******* *** **, *** ****/**** scale ** *** '******* ********' *** expressing ******** *******.

Be *******

********, **** ************* **** *********** **** portions ** ** ********, ** **** 'equivalent **' ****** *** ******** *******. For *******, **** **** ** *** details ** *** ********* ***** ***********'* ************ *****:

*** '**** ***** *' ****** ******* to *** ****'* ********, ***** ** a ********* ******* *** *** ** used ** * ******* ** ********, but *** **** ****** ** *** Grade-1 *****. ******* **** * ******* of *** ******** ***** '***** *' rated, ** ************ ***** *** ****** the ****** ******** *** ********* ** 'top *******', **** ** *** ***.

****, **** * ******* ****** '********** to ****/**** ***** *' ** '********* to ***** * *********', **** ********* that * ************ *** ******** ******** similar ** * '*****' *******, *** has *** ********* * ******** *** actual *******. *** ************ *** ****** a ***** ** ******* ** ********** evaluate * *******, *** ** **** can **** ****** ***** '**** *********' when ********* ** ** ******* ********** lab.

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