although the warranties vary from product to product, they generally provide for a payment of up to two times the purchase price. The following table presents an analysis of the net  reserve activity related to the Hardboard, Omniwood and Woodruf Lawsuits for the years ended December 31, 2004, 2003 and 2002. In the third quarter of 2001, a determination was made that an additional provision would be required to cover an expected shortfall in the reserves that had arisen since the third quarter of 2000 due to actual claims experience exceeding projections. An additional $225 million was added to the existing reserve balance at that time. This increase was based on third party consultants’ statistical studies of future costs, which analyzed trends in the claims experience through August 31, 2001. The amount was based on a statistical outcome that assumed that Hardboard claims growth continued through mid-2002, then declined by 50% per year. Omniwood claims growth was assumed to continue through mid-2002, decline by 50% in 2003 and thereafter increase at the rate of 10% per year. Woodruf claims were assumed to decline at a rate of 50% per year. Unit costs per claim were assumed to hold at the 2001 level. The statistical model used to develop this outcome also included assumptions on the geographic patterns of claims rates and assumptions related to the cost of claims, including forecasts relating to the rate of inflation. Average claim costs were calculated from historical claims records, taking into consideration structure type, location and source of the claim. Additional Provisions  Reserve Balances Reserve Analysis During 2002, tracking of the actual versus projected number of claims filed and average cost per claim indicated that although total claims costs were approximately equal to projected amounts, the number of claims filed was higher than projected, offsetting the effect of lower average claims payment amounts. Accordingly, updated projections were developed by two third-party consultants utilizing the most current claims experience data. Principal assumptions used in the development of these projections were that the number of Hardboard claims filed, which account for approximately 85% of all claims costs, would average slightly above current levels until January 2005, then would decline by about 70% in 2005 and remain flat to the end of the claims period. Average claims costs were assumed to continue to decline at the rate experienced during the last twelve months. While management believes that the assumptions used in developing these outcomes represent the most probable scenario, factors which could cause actual results to vary from these assumptions include: (1) area specific assumptions as to growth in claims rates could be incorrect, (2) locations where previously there had been little or no claims could emerge as significant geographic locations, and (3) the cost per claim could vary materially from that projected. The first consultant provided two statistical outcomes, with the higher outcome indicating a required provision of approximately $430 million. The second consultant provided a range of possible outcomes, with the most probable outcome indicating a required provision of approximately $475 million. The estimate ranged from a low (a 95% probability that future charges would exceed this amount) of $338 million to a high (5% probability that future charges would exceed this amount) of $635 million. Using these projections, management determined that a provision of $450 million should be recorded in the fourth quarter of 2002 as an estimate of the most probable outcome based on the consultants’ projections. During 2004 and 2003, claims filed and average costs per claim were in line with 2002 projections and no adjustments of reserve balances were required. At December 31, 2004, net reserves for these matters totaled $259 million, including $158 million for the Hardboard Lawsuit, $97 million for the Omniwood Lawsuit and $4 million for the Woodruf Lawsuit. At December 31, 2004, there were $33 million of costs associated with claims inspected and not paid ($27 million for Hardboard, $5 million for Omniwood and $1 million for Woodruf) and $29 million of costs associated with claims in process and not yet inspected ($24 million for claims related 61 Hard-) Omni-) In millions board) wood) Woodruf) Total) Balance, December  31, 2001 $179) $20) $9) $208) Additional provision 305) 134) 11) 450) Payments (161) (16) (8) (185) Insurance collections 34) -) -) 34) Balance, December  31, 2002 357) 138) 12) 507) Payments (129) (21) (3) (153) Insurance collections 33) -) -) 33) Balance, December  31, 2003 261) 117) 9) 387) Payments (111) (20) (5) (136) Insurance collections 8) -) -) 8) Balance, December  31, 2004 $158) $97) $4) $259)