| DCM Clean Air Products, Inc. | Lakewood | NJ | $168M |
| Cepeda Associates, Inc. | Louisville | KY | $81.1M |
| The O.c. Lugo Co. Inc. | Connellsville | PA | $37.3M |
| Clayton Associates Inc. | Lakewood | NJ | $27.3M |
| Fm Af, LLC | Fairfield | OH | $22.3M |
| Ashland Electric Products Inc. | Rochester | NH | $13.9M |
| Dynamic Air Engineering, Inc. | Claremont | NC | $13.8M |
| Xenex Disinfection Services Inc. | San Antonio | TX | $10.4M |
| Donaldson Company, Inc.Chesterfield, MO · UEI SVKLZQT22LV3 | Chesterfield | MO | $7.77M |
| Rse Inc. | New Baltimore | MI | $7.39M |
| Camfil USA Inc. | Riverdale | NJ | $6.17M |
| J. T. Systems, Inc. | Liverpool | NY | $6.1M |
| Lone Star Blower, Inc. | Houston | TX | $5.65M |
| Falls Filtration Technologies, Inc. | Stow | OH | $5.18M |
| Molecular Products Inc. | Louisville | CO | $5M |
| Tiger-vac Inc. | Dania | FL | $3.53M |
| Steriliz, LLC | Penfield | NY | $3.46M |
| Euramco Safety Inc. | Spring Valley | CA | $3.43M |
| Super Vacuum Manufacturing Co. Inc. | Fort Collins | CO | $2.63M |
| Duroair Technologies USA Inc. | New Baltimore | MI | $2.47M |
| General Aire Systems, Inc. | Aston | PA | $2.4M |
| Clark Air Conditioning Systems, Inc. | East Aurora | NY | $2.3M |
| Donaldson Company, Inc.Minneapolis, MN · UEI UES5F4AAZJK5 | Minneapolis | MN | $2.04M |
| Flow Sciences, Inc. | Leland | NC | $1.87M |
| Redlands Manufacturing Co. LLC | Redlands | CA | $1.86M |
| Carcoon America Inc. | Palmetto | FL | $1.71M |
| Delta T, LLC | Lexington | KY | $1.55M |
| Espin Technologies, Inc. | Chattanooga | TN | $1.5M |
| White Ron & Associates LLC | Thornville | OH | $1.44M |
| No-fade Coatings, Inc. | Piedmont | SC | $1.28M |
| Lectrodryer LLC | Richmond | KY | $1.16M |
| Mystaire Inc. | Creedmoor | NC | $1.12M |
| Abatement Technologies, Inc. | Suwanee | GA | $1.06M |
| Dualdraw, A Limited Liability Company | Denver | CO | $961K |
| Federal Prison Industries, Inc. | Texarkana | TX | $939K |
| Anguil Environmental Systems, Inc. | Milwaukee | WI | $756K |
| Diamondone Energy Services LLC | Mountain Top | PA | $737K |
| Beecher Emission Solution Technologies LLC | Horseheads | NY | $702K |
| Writax Distribution Private Limited | New Delhi | | $671K |
| Sonata Scientific LLC | Danbury | CT | $600K |
| Monroe Environmental Corp. | Monroe | MI | $546K |
| Sledge Tech LLC | Lindale | GA | $523K |
| Hunter Defense Technologies, Inc. | Solon | OH | $491K |
| Flanders Filters, Inc. | Washington | NC | $487K |
| Crossair LLC | Ellenboro | NC | $471K |
| American Air Filter Co. Inc. | Louisville | KY | $452K |
| Airgle Corporation | Holbrook | NY | $431K |
| Clem Direct Retail LLC | Prosper | TX | $423K |
| K & J Ag Enterprises, LLC | Echo | MN | $418K |
| Osborn Equipment Sales, Inc. | Broken Arrow | OK | $365K |
| Clean Air Consultants, Inc. | Garland | TX | $351K |
| Murphy Enterprises Of Alabama, Inc. | Hoover | AL | $339K |
| Trade Trac, Inc. | San Diego | CA | $323K |
| Filtech Inc. | Munhall | PA | $308K |
| Air Vacuum Corp. | Rochester | NH | $290K |
| Applied Medical Technologies, Inc. | Creedmoor | NC | $280K |
| Duroair Technologies Inc. | Niagara Falls | ON | $271K |
| R. P. Fedder Industrial, LLC | Rochester | NY | $266K |
| Synexis LLC | Overland Park | KS | $264K |
| Air Cleaning Technologies, Inc. | Broken Arrow | OK | $262K |
| The Local Exhaust & Ventilation Company, Inc. | Port Perry | ON | $257K |
| Howden USA Co. | Windsor | CT | $250K |
| The Filter Factory Inc. | Lompoc | CA | $248K |
| Beijing New Image Co. Ltd. | Beijing | | $239K |
| LMB North America, Inc. | Miami | FL | $216K |
| Nq Industries, Inc. | Hamden | CT | $210K |
| Hepacart, Inc. | Lenexa | KS | $206K |
| Murray Ventilation Products, LLC | Stuart | FL | $200K |
| Precision Industrial Services Inc. | Greensboro | NC | $181K |
| LTG Inc. | Spartanburg | SC | $178K |
| The Sy-klone Company, LLC | Jacksonville | FL | $170K |
| Carrier Process Equipment Group Inc. | Louisville | KY | $167K |
| Air Cleaning Specialists Inc. | Saint Louis | MO | $162K |
| J And J Filters LLC | Hazlehurst | GA | $160K |
| Tomi Environmental Solutions, Inc. | Frederick | MD | $156K |
| Robovent Solutions Group Inc. | Chesterfield | MI | $155K |
| US Air Purifiers LLC | Peoria | IL | $151K |
| Bluesky-global LLC | Tomball | TX | $146K |
| Iqair North America, Inc. | La Mirada | CA | $126K |
| Superior Air Products, LLC | Goddard | KS | $122K |
| Effective Controls, Inc. | New Ringgold | PA | $113K |
| Aquest Corp. | Somers | CT | $110K |
| Envirosystems Manufacturing LLC | Tucson | AZ | $110K |
| Blowers, LLC | Elmhurst | IL | $107K |
| Lm Air Technology Inc. | Rahway | NJ | $101K |
| La Mar Industries, Inc. | Long Beach | CA | $101K |
| Verdeterra LLC | Atlanta | GA | $100K |
| Austin Air Systems Ltd. | Buffalo | NY | $97K |
| Process Air Solutions, LLC | Fenton | MO | $89.9K |
| Airex Filter Corp. | Hudson | NH | $88.2K |
| Air Cleaning Systems, Inc. | Latham | NY | $86.9K |
| Altec Air, LLC | Broomfield | CO | $76.7K |
| Filters South, Inc. | Georgetown | SC | $69.7K |
| Sentry Air Systems, Inc. | Cypress | TX | $69.3K |
| Quality Product Solutions LLC | Ixonia | WI | $59.2K |
| RGF Environmental Group, Inc. | Riviera Beach | FL | $58K |
| P & G Manufacturing Of Washington, Inc. | Washington | NC | $55.3K |
| Air Specialists Of Virginia Inc. | Ashland | VA | $53K |
| Hartzell Fan, Inc. | Piqua | OH | $50.4K |
| Flow Control Technology Company, LLC | Tampa | FL | $49.2K |
