EAST GREENVILLE, PA –Furniture manufacturer Knoll Inc. announced results for the first quarter ended March 31. Net sales were $247.9 million for the quarter, which was an increase of 13.7% from the first quarter 2006. Operating income reached $30.8 million, or 12.4% of net sales, an increase of 40.6% from the same period last year. Net income was $14.8 million, which was up 45.1% from the first quarter of 2006. Read more.