Brighton Glass part for quote

Question

On the large part spring has number a big 7 then a small 23x onit. The small one has a big 7 and then a small. 37w believe to be TRACO WINDOWS.  BRIGHTON GLASS

Bob · Accepted Answer

Thanks for contacting SWISCO. It looks like you have a 15-087 Coil Housing Pivot, along with the 15-086 Tandem Coil Housing. Your therefore have Series 180 Coil Springs. The '7' stamp indicates you might need the S180-7 Coil Springs specifically; but to be sure, do you know the weight of your window sash? If not, could you weigh it as precisely as possible? Also, how many coils do you need to replace total?