Prestashop module

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Project Budget (USD)
$30 - $250

Project Description:
I need a module for Prestashop so the clients can buy merchandise by attributes of width and length.
Client must be able to write any number from 0 to 10 meters with intervalls of 5mm so a dropdown list or something like that is out of question.
It must be 2 boxes one for width and one for length.
If you already wrote something like this it would be great so I can see it in work.
I need this module quite fast, thanks.

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