Single-hung aluminum RADCO window Balance

I would like to replace the sash balance on my single-hung aluminum RADCO windows.

"2040" is indicated on the old sash balance.

A local supplier sells an acceptable substitute with the designation "20 4 HV CMC 7" instead of 2040.

Do you sell this part?

THANKS

Need sash balance replacements for a 1980's metal window. It's a four-foot square sash frame with the old shoes pictured below. I've referenced your catalogue and nothing matches for me.

Mike,

Here's the photos of the broken part, as you requested. The sash replacements are for 4x4 ft, non-tilting, single-hung RADCO aluminum windows. Unfortunately, I am unable to correctly select the right sash balance shoes from your online catalog.

Thank you for your help in identifying the right replacement part.

Deb B.

Through previous correspondence with SWISCO, we have been able to identify sash balance replacements for our single-hung 4x4 ft RADCO aluminum windows. It's the S380 with a 19-005 top and a 15-005 shoe, option 2040.

Now we would like to replace the sash balances on our 3x4 ft (4 ft is the same height as above) RADCO single hung windows, which have always been difficult to close. We removed and checked the balance identification numbers on these smaller windows and they are the same as the larger 4x4 ft window.

Yet these 3x4 ft windows have always been difficult to close. Because of the, should we consider a different size option? A 2030?