Spiral Balance for Double Hung tilting window

Question

I have a red tipped, 3/8" diameter, spiral balancer (x2 for one window). When measuring the length of of the both metal tubes, I am exactly in between your available selections of 28" and 29", I measured the metal only portion and get exactly 28 1/2". My question is, which size do I pick for a replacement, 28" or 29" ? Or do you have another custom selection capability or suggestions?

Thanks for your support and nice web site for you products!!
Matt

Tom · Accepted Answer

Hey, Matt. Older balances were once made on the 1/2", but modern manufacturers only make them on the full inch. We find that bumping up to the next highest inch works fine; in your case, I'd go with 29".

I would weigh your sash on a scale and refer to the chart on the S900-29 store page to confirm the best color tip option.