I see both these listed by sellers, but only the 631 listed on the
Astatic website:
http://www.astaticinstalled.com/products.asp?cat=10

I'm not sure what to make of this. I wonder how the two compare, and
which might be the better value for the money.

One seller:
http://www.sjtelecommunications.com/ast-636l.html
carries both and, I think for the same price.

Any thoughts? Thanks.
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-CH
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