Tension rod length

A home owner from Michigan says:
July 24, 2017
I have a 3/8 diameter tension rod. Series 900 is what I'm looking at to replace. My rod has a blue tip and is 28-1/2, I see you have 28 or 29 as size options. Which should I get?

Thanks
Jeremy
Tension rod length
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Tom from SWISCO responded:
July 27, 2017
Hello! A lot of older balances were made on the 1/2", but most manufacturers phased that out a long time ago. We find it's safe to round up to the next inch. In your case, 29" should be fine. I would also double check the diameter. You want to measure the diameter of the outer tube, not the spring itself.
28" Series 900 Spiral Balance
28" Series 900 Spiral Balance
S900-28
$9.10
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