Lydall, Inc. designs, manufactures, and markets specialty engineered filtration media, industrial thermal insulating solutions, and automotive thermal and acoustical barriers for filtration/separation and thermal/acoustical applications worldwide. It operates through Performance Materials, Technical Nonwovens, and Thermal Acoustical Solutions segments. The Performance Materials segment offers filtration media solutions for air, fluid power, and industrial applications, such as clean-space, commercial, HVAC, power generation, and industrial processes. This segment also provides non-woven veils, papers, and specialty composites for the building products, appliances, and energy and industrial markets; and life sciences filtration products for biopharmaceutical pre-filtration and clarification, diagnostic and analytical testing, respiratory protection, water filtration, and high purity process filtration. The Technical Nonwovens segment offers nonwoven rolled-good felt media and filter bags used primarily in industrial air and liquid filtration applications. The Thermal Acoustical Solutions segment provides engineered products for the transportation sector to thermally shield sensitive components from high heat, improve exhaust gas treatment, and lower harmful emissions, as well as assist in the reduction of noise, vibration, and harshness. Its products are used in the tunnel, fuel tank, wheel well, aerodynamic belly pan, and spare tire applications, as well as outer dash, powertrain, catalytic converter, turbo charger, and manifolds of cars, trucks, SUVs, heavy duty trucks, and recreational vehicles. This segment also offers thermal and acoustical insulating solutions comprising organic and inorganic fiber composites for the automotive markets. The company markets its products to original equipment manufacturers and tier-one suppliers through internal sales force and distribution network. Lydall, Inc. was founded in 1879 and is headquartered in Manchester, Connecticut.