August 2014 EM/Cowl Silencer Products

Key Markets

Well Established Customer Base

The EM/Cowl Difference Engineering – Collaborative approach – Industry leading technology and experience World Class Performance – Quality manufacturing processes – Experienced workforce – First class workmanship – Product consistency – Prompt responsiveness – On-going customer support “As a long-term solutions partner, we are always committed to your silencing needs.”

Engineering Solutions LMS – Acoustical Prediction Software – Ability to tune for a specific frequency attenuation FEA – Finite Element Analysis – Structural – Thermal – G-loading – Point loading Industry leader in acoustical technologies…

Engineering Solutions Particle Tracing Back Pressure Profile Velocity Flow Profile Computational Fluid Dynamics

Attenuation Grades

J-Series (Cylindrical) Dual Shell Construction Aluminized/Carbon Steel Construction Stainless Steel Offered Inlet/Outlet Configurations Custom Designs Available Optional Spark Arresting Design Broad Range of Attenuation – Industrial: dB(A) – Residential: dB(A) – Critical: dB(A) – Hospital: dB(A) – Extreme and Super Extreme Attenuation are also available

Oval Silencers Maximize Volume with Lower Profile – Additional Attenuation Shell Packed with 2” of Fiberglass Insulation – No internal insulation in the critical grade Carbon/Stainless Steel Construction Inlet/Outlet Configurations Custom Designs Available Attenuation: – OC Critical Grade: dB(A) – OH Hospital Grade: dB(A) – OSH Super Hospital Grade: dB(A) – OX Extreme Grade: dB(A)

Disk Silencers Designed for Limited Space Claims Shell Packed with 2” of Fiberglass Insulation Carbon/Stainless Steel Construction Inlet/Outlet Configurations Custom Designs Available Optional Spark Arresting Design Attenuation: – DHK Hospital Grade: dB(A) – DCK2 Critical Grade: dB(A)

CPJ Series (Compact) Compact, Economical Silencer Combination of Absorptive and Reactive Designs Shell Packed with Fiberglass Insulation Aluminized/Stainless Steel Construction Inlet/Outlet Configurations Custom Designs Available Attenuation: – Residential Grade: dB(A)

EM Product Line Overview GradedB(A) Cylindrical (J-Series) Low Pressure Drop SA w/ DNV SA w/ ATEX SA only Disk Disk w/ SA OvalCompact N/A SAU Industrial 12-18JISSUSSA Residential 18-25JRTAUSRUSRACPJ Critical 25-35JCTBUSCUSCADCK2DCSOC Hospital 35-40JHSHUSHADHKDHSOH Super Hospital 38-46OSH Extreme 40-52OX Super Extreme

Spiral Silencers Industry Leading Compact Silencers Single Spiral Chamber Low Back Pressure/High Flow Reversible Flow 1/3 the size and 1/2 the weight Aluminized/Stainless Steel Construction Inlet/Outlet Configurations Attenuation: – Residential Grade: dB(A) – Critical Grade: dB(A)

Cowl Product Line Overview Part Number Prefixes Silencing Grade dB(A) Perimeter Discharge Turn Discharge Slot Discharge Vee Engines / Dual Inlets Side Disch. PRPLTRTLSRSLPVSVS [ ] TS Residential √√√√√√√√ TSX Critical √√√√√√√√ MS Residential √√√√ MD Industrial √ 14 TS and TSX are the principal product lines The MS product line adds a support bracket to the TS product The MD product line is a MicroDisc design for small engines See page 58 of the Silencer Catalog for part numbering format

Customized Designs Specific dB(A) Requirements – Up to 60 dB(A) Materials: – Aluminized Steel – Carbon Steel – Stainless Steel 304, 316 and 321 Shapes: – Cylindrical, Disk, Oval, Rectangle or Custom Space Optimizing Shape Types: – Absorptive, Reactive, Spark Arresting, and Catalytic Combination Inlet/Outlet Configurations

Additional Accessories Flanges, Fittings and Clamps – ANSI, Engine and Turbo Flanges – Flange Gaskets and BNG Kits – Stack Breakers and Clamps Mounting Bands Piping: – Corrugated Flex Hose – Elbows – Flex Assemblies – Bellows Expansion Joints – WYE Connectors Rain Caps and Guards Thimbles

Product Comparison LEADING COMPETITOREM/COWL PRODUCTS

Manufacturing Consistency

Product Advantages FeatureBenefit Internal EngineeringMaximum attenuation through design Reactive or absorptive designs Combination of designs Dual Shell ConstructionEliminates shell radiated noise CertificationsATEX / DNV MaterialsCarbon Steel Stainless Steel Aluminized Steel (up to 26” diameter) Manufacturing QualityISO Registered Custom DesignsAbility to meet attenuation requirements Inlet/Outlet configurations Full line of accessories

Exceeding Your Expectations Project/New Orders New Installation of Equipment Consultative Approach Engineering Support Standard or Customized Product Quality, R&D Tested Parts On-time Delivery Superior Customer Service

Added Value Distinctions Customization – flexibility and quality Reputation – program sales history High performance attenuation … to 60 dB(A) Innovative custom designs – roof top drop-in Certifications and qualifications: DNV, ATEX, USDA Forest Service Turbo to rain cap Systems Provider Validated full-scale solutions at the Innovation Center … not simply modeling 22

Questions?