$1000 less? What are the high and low bids?

"Arnold H. Hollander" wrote in message
...
Hi,
I'm planning on having a patio sliding glass door installed. Of the three
manufacturers I checked, Andersen, Pella, and Marvin, Andersen was about
$1000 less than the others. Before I make the decision that makes
economic
sense, are there any compelling reasons I should steer clear of Andersen
and
spend the extra money?
Thanks.