Spiral balance and others for Woodbridge Townhouse

Thanks for posting. Your tilt latches look like our 26-157 and 26-158. As for the spiral balance, I'd bet it's either our Series 900 (3/8" diameter) or Series 600 (5/8" diameter). I can't tell from your photo what your diameter is. My colleague Tim tells me that it's 1/2", but I don't think that's accurate. There is only one type of spiral balance that's made with a 1/2" diameter, and you don't have it. The diameter should be either 3/8" or 5/8".