Channel Balance assemblies

Question

I need 2 each Channel Balance Assemblies. Markings on old assemblies appears to be 27C, however when measuring the metal portion of the Channel itself, end-to-end, it measures 28". I went to Southwest Glazing Supply Company in Dallas, TX and they said there part number for this was 2740 or 27D but when they did a cross reference with your website they said it was a SWISCO S350-28. I have pictures if necessary. I need to order these parts ASAP. Thanks.

User submitted photos of a window balance.

Tom · Accepted Answer

This could be our S350-28, yes. The stamp is not a part number, it's only indicative of spring strength. There is no number on your balance that will tell you what it is, the only thing that will confirm is the style and size of the nylon shoes. From what I see in your pictures, as long as the bottom shoe is the same size as the 15-002, then the S350-28 should be okay.

I would also recommend the 2730 option. You can always weigh your sash to confirm that this is correct.