A quick learner from flordia says:
March 1, 2016
thay are 29 ins long stamp 28 5 i wount 4 of them thinks bill
Tom from SWISCO responded:
March 2, 2016
Unfortunately, I'm not able to identify what you have based on this information alone. I recommend that you look at our Channel Balance Home Page and follow the steps in order to find the Series that best matches what you have.