Assistance Please.

Question

I'm a return customer. These look like S390 but I'm not quite certain. We have two windows and need parts for both.

Bob · Accepted Answer

Thanks for posting. I'd be inclined to say it's a Series 390 as well. It comes down to the depth of the bottom nylon shoe. See below. If it's greater than 1", then you have a Series 390. If the metal channel, not including the attachments, is 29" long, then it's an S390-29. Finally, for a stamp option choose 2820. Let me know if you have further questions.

Comparison of the S351 and S390 balance shoes.