I have attached two pictures with measurements and cast-in numbers, I need two mechanisms with the "40471" number and one with the "L31538A" number. Please let me know if you need more information

Methodology for determining left from right? : SWISCO.com

Tom from SWISCO

Jun 3, 2013 11:51 am

Good morning! Check out our 39-031 & 39-032 Truth EntryGard operators. These appear to match your originals quite closely, but you can review our specs to verify.

Dimensions for 39-031

3 Replies

Quick Learner from Wisconsin

Aug 3, 2020 6:52 pm

Hi Guys

Is the industry clear on handing terminology ?

I see conflicting views on the subject.

With your help I have identified the two different operators I need. Both numbers have a left and right mounting position. INSIDE the window looking out or OUTSIDE the window looking in ?

Thanks, Dave

Tom from SWISCO

Aug 6, 2020 11:15 am

Hi, Dave. This industry is anything but clear when it comes to the matter of left vs right. Every company defines it differently, and even the same company will change its mind over the years. You're better off ignoring the concepts of "left" and "right" entirely and base your decision on the design of the part in question. What side are the gears on? What side is the handle on? And the arms? Stuff like that. That's what I do and it saves me the headache.