Dear Karen: Thank you so much for your detailed information which I found very helpful. I was looking for specific information like that and really appreciate you taking the time to supply me with all the details. You were the only person to suggest a backpack model, and it was interesting to hear that the students liked them. Most responses recommended the Nilfisk GM80, which is quite expensive, and among the several responses that suggested other brands, no two mentioned the same one. We actually have four libraries, and I will recommend that we buy one Nilfisk for the main library, which has the most dust, and three less expensive ones for the others. Thanks again for your very useful information. All the best, Lene Karen E Brown wrote:
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