Replacement spring channels and replacement locks

Hey Bonnie. The sash lock looks possibly like either our 90-005 or 90-009. These locks are similar, except they have different locking tongues. Compare the diagrams below with your old hardware to determine if either of these locks match what you have.

Comparison of 90-005 and 90-009

Alternate image for 90-005

Alternate image for 90-009

The channel balances are likely either our S380-27 or S385-27. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. See the diagram below for reference. For a stamp option choose 2640.

Comparison of the S380 and S385 balance shoes.

Thanks for reaching out to us! Bob isn't here today but I will do my best to assist you. 

Starting with the lock, I don't think either the 90-009 or 90-005 will work. It looks like your installation holes are offset fairly deeply, so they won't align with the original placement. We actually only sell one lock with holes that offset, which would be our 90-313.

Dimensions for 90-313

You'll note that this has a hook tab instead of a flat tab, but the shape won't matter in your case. It's not contoured or anything. I guess I'm more concerned with how large your tab is in general. It looks like it sticks out pretty far, but on the other hand  just eyeballing your first photo I'm thinking the 90-313 sticks out plenty far enough to engage with the top sash.

As for the balance shoe depth, that's tougher to say. It looks like it might be over 1" in total depth. Note that you're measuring the total depth, tip to tip. You also have to be mindful of the fact that these are nylon parts and therefore wear down over time from friction, so your size may be somewhat less than it once was. You may have to make some mental calculations to verify the better option.

You're very welcome, Bonnie! Best of luck with this project. We're of course always here to help if you needed it, too. 

I'll be sure to pass on your thanks to Bob next time he's in!

That's great news! Thanks again for the order, and for this verification. I'm sure the data will help other customers in the future.