casement swing arm

Contractor from Langhorne, PA

Nov 10, 2010 9:55 am

Before I order, please confirm which part I should order. two identifiable numbers are on two separate pieces of this part that I need to replace. one piece has 20810 and another piece has 30841L. It is either your part number 39-155 or your 39-031. Please confirm which one to order.

Mike, Regal Construction Mgnt.

10 Replies

Dave Sr. from SWISCO

Nov 10, 2010 12:11 pm

The 39-031 operator was used by various window manufactures. It has a 4-1/2" link arm with the clip on it. The 39-155 was used mainly by "Cardco" windows. It has a 3-13/16" link arm with the clip on it with #20755 stamped on it. Sorry I can not ID your numbers. Go onto each product page to get a better look. You can also post pictures of your hardware if you would like us to try to identify which replacement operator you need.

Quick Learner

Nov 10, 2010 4:50 pm

Dave, the long arm measures 9 1/2" does that help? When looking at the window from the interior, the locks are on the left and it pivots from the right.
- Mike

Tom from SWISCO

Nov 11, 2010 10:00 am

Dave's original reply used the term "long", but we have since changed it to "link".

Tom from SWISCO

Nov 15, 2010 10:18 am

We would be happy to research this for you if you cannot identify the needed hardware on our site. Please post some pictures of your hardware in a reply to this discussion thread.

Quick Learner

Nov 15, 2010 11:09 am

If you may, Is anyone there able to zero in on the part I am looking for? The glide rail did have Thermal Gard stamped on it.
- Mike L.

Casey from SWISCO

Nov 17, 2010 12:50 pm

Does the link arm measure 4-1/2" or 3-13/16"?

Quick Learner

Nov 17, 2010 1:46 pm

The glide rail has "Thermal Gard" stamped on it. The Long arm measures 9.5", the small piece closest to the interior, and has a curve to it, has a stamp (30841L), the piece connected to that one and then to the sash has a stamp also (20810).

User photo of their Thermal Gard glide rail.

Quick Learner

Nov 17, 2010 4:12 pm

I do not wish to make another trip to the job, to measure again. It would be embarrassing.If the stamped numbers don't answer that question then I will take a guess and say 4-1/2"

Casey from SWISCO

Nov 18, 2010 5:47 am

That is embarrassing, I wish I could tell from the photo exactly what one to choose, the 39-031 and 39-032 operators with the 4-1/2" link arm are more popular so that is a good choice when you are not sure of the size.