The document is a sealed bid proposal for a project titled "Multi-Family Weatherization Mechanical." The document is addressed to Tyrone J. Tipitino, who is the Financial Services Administrator and Chief Procurement Officer for the County of Du Page, Illinois. The bid proposal has an invitation number of 11-008 and an opening date of November 10, 2010, at 2:00 PM. The document emphasizes that late bids will not be accepted. The bidder is instructed to cut out and affix a bid label to the outermost envelope of their proposal for proper delivery. The document consists of 54 pages, with this information being on the last page.