Lydall’s net sales in the first quarter of 2019 increased by $26.4 million, or 13.8%, to $218 million, compared to $191.7 million in the first quarter of 2018 primarily from the acquisition of Interface Performance Materials ("Interface"), which increased Performance Materials ("PM") segment net sales by $32.9 million. Organic sales growth was 3.6% in the PM segment driven primarily by improved sales of filtration products. The Technical Nonwovens ("TNW") segment reported organic sales growth of 1.5% from improved demand for industrial filtration products, partially offset by lower advanced materials sales. The Thermal Acoustical Solutions ("TAS") segment reported a 1.5% reduction in organic sales primarily from reduced parts sales in North America.