N. America's top supplier of maintenance, repair and operating product said daily sales rose 6% in Feb. vs. last year. U.S. daily sales were up 7% and Canadian sales rose 6%. Sales in Asia, Europe and S. America, rose 7%. W.W. Grainger (GWW) is slated to report Q1 earnings before the market opens April 16. Shares fell 2.1% to 225.80.