www.sjrafferty.com2144 Priest Bridge Court, Suite 3 • Crofton, MD 21114 Office: (410) 721-4005 • Fax: (410) 721-4009

• Cooling, heating and heat recovery coils by leading manufacturers• Direct replacement coils – Optional split coil construction• Cooney Freeze Block Coils

Coils

• Electronic airflow control valves (AccuValves) for critical environments• Fume hood controls• VorTek digital airflow measurement for fan inlets & ducts (vortex shedding)• IAQ-Tek outdoor airflow measurement system• Bladder type pneumatic airflow control valves (Pneumavalves)

Accutrolwww.accutrolllc.com

• Radiant waves, modules, extrusions and ceilings• Active and passive chilled beams

Barcol-Air www.barcolairusa.com

• Tunnel ventilation fans (centrifugal, 100% reversible axiaI fans and jet fans)• Industrial and mechanical draft fans (centrifugal and axial)

Clarage www.clarage.com

• Custom FRP air handling units, plenums and enclosures• Lifetime warranty against corrosion

Composite Air Design (C.A.D.) www.compositeairdesign.com

COMPOSITE AIR DESIGN

• No field-weld laboratory exhaust ductwork pressure decay tested to ASME N510• No field-weld NFPA 96 grease duct systems• UL listed fire and blast resistant ductwork – No wrap required• Fire enclosures, blast enclosures and underground corrosion resistant

DuraSystems www.durasystems.com

• MAC 10 Series Fan Filter Units (FFU) ➤ Standard or room-side replaceable (RSR or RSRE) ➤ Constant or variable airflow ➤ AC or EC motors (ECM)

Envirco www.envirco-hvac.com

• Bag-In/Bag-Out (BIBO) containment filtration housings/systems• Bubble-tight isolation dampers• ASHRAE, HEPA and HEGA filters, frames and housings• Ultra-low pressure drop filters• Cleanroom filtration equipment

Filtration Group www.filtrationgroup.com

• Humidification and evaporative cooling systems utilizing pump units and water atomizing fog nozzles

• Optional water treatment systems• No compressed air required

GoFog Inc. www.gofoginc.com

• Energy recovery wheels for new installations• Repair or replacement of existing energy recovery wheels• Free inspections and estimates• Turnkey retrofit service available

Thermotech www.thermotech-usa.com

• HVAC silencers, industrial silencers and acoustical louvers• Noise control and vibration isolation roof curbs• Acoustical enclosures• Double wall panels for plenums, enclosures, barriers and built-up AHUs• Free Silencer Application and Selection Services (Acoustical Analysis)

Vibro-Acoustics www.vibro-acoustics.com

• Custom and semi-custom indoor and outdoor AHUs• State-of-the-art knockdown construction for site-built projects • Field assembly, testing and startup services available

Ingenia www.ingeniatechnologies.com

• High-performance energy recovery system• Guaranteed performance / energy savings• Remote performance monitoring

Konvekta www.konvekta.ch

• High plume dilution laboratory exhaust fans (Axijets) – FRP or coated steel• Corrosion-resistant FRP fans, plenums and dampers• Perchloric acid fume hood exhaust systems

M.K. Plastics www.mkplastics.com

• Demand control ventilation fan systems for parking garages

Systemair www.systemair.com

• Complete line of commercial and industrial fans• Widest range of laboratory exhaust fans available

Twin City Fan & Blower www.tcf.com

Manufacturers represented in Maryland, Washington DC and Virginia

03/19

2144 Priest Bridge Court, Suite 3 • Crofton, MD 21114 Office: (410) 721-4005 • Fax: (410) 721-4009 www.sjrafferty.com