Measuring for window weatherstripping

A home owner from Smyrna, Georgia says:
November 13, 2017
Need to replace the weatherstripping on my Windows. It has become brittle and falling apart. Sending photos of what is on there but not sure which size to order. You have two the .270 T-slot or the .187 T-slot filled bulb weather seal. Can you tell by the photos I sent which one. What is your return policy?

The length and the diameter of the stripping is 3/8 in.
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Tom from SWISCO responded:
November 17, 2017
I've received your pictures, but I'm afraid I cannot tell by your pictures which one of ours is the best match. You're going to have to measure yours as accurately as you can and refer to the dimensions we show on our site. That's the only way to confirm. You can see our return policy here.
.270 T-Slot Foam Filled Bulb Weatherseal,12ft
.270 T-Slot Foam Filled Bulb Weatherseal,12ft
58-171
$17.99
.187 T-Slot Foam Filled Bulb Weatherseal,12ft
.187 T-Slot Foam Filled Bulb Weatherseal,12ft
58-182
$15.20
How to identify replacement weatherstripping.
How to identify replacement weatherstripping.
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Identifying Replacement Weatherstripping
Identifying Replacement Weatherstripping
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