What D-Mark does

D-Mark Inc. is a Michigan-based manufacturer of activated carbon air filtration products for HVAC systems, founded in 1970 and operating from Mt. Clemens. The company builds its differentiation on a proprietary non-woven adsorptive media branded CarbonWeb®, which contains 60% activity granular activated carbon with approximately five million square feet of surface area per pound and is positioned as offering higher surface area, lower pressure drop, and longer service life than loose-fill or pelletized carbon alternatives. The product portfolio spans panel filters, V-bank filters (including mini-pleats), rigid filters (including HEGA/MERV 15 configurations), bulk roll media (including a wildfire-smoke variant), compact gas adsorbers, and custom-engineered specialty units, addressing VOCs, diesel and aviation exhaust, acid gases, wildfire smoke, and nuisance odors.

D-Mark sells through a B2B sales-led motion, primarily quote-based, with multi-year contract structures, directed at commercial and institutional end-users including airports (a major international airport is a referenced customer), hospitals and healthcare facilities, research laboratories and life-sciences facilities, restaurants and food-and-beverage operators, and museums. Distribution is direct enterprise sales via the Rensa Filtration corporate website, sales team, and company-family channels.

Since 2018, D-Mark has operated as a wholly-owned subsidiary of Rensa Filtration, with its CarbonWeb filters integrated into the Rensa product portfolio and marketed under the unified Rensa brand across web, LinkedIn, and YouTube. The company is privately held, US-only in operating geography, reports 101-250 employees, and does not disclose revenue or funding data in the public source material.

Name

D-Mark

Legal name

D-Mark Inc.

Website

https://dmarkinc.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

101–250 employees

Short description

D-Mark is a Michigan-based manufacturer of activated carbon air filtration products for HVAC systems, founded in 1970 and a subsidiary of Rensa Filtration since 2018. It sells proprietary CarbonWeb® media filters — V-bank, panel, rigid, pleated, and gas-adsorber formats — via direct B2B sales to airports, hospitals, research labs, restaurants, and museums.

Ownership category

akta.pro rank

Product category

Activated Carbon Air Filtration Products

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Activated Carbon & Carbon Adsorbents (IMAEAIAF)

akta.pro secondary industry

Air Quality & Filtration Equipment (IAQ) (IMAHAKAI)

Keywords

• Activated carbon filters
• HVAC filtration products
• Molecular air filtration
• Industrial air filters
• Carbon filter media

Headquarters

HQ city

Mt. Clemens

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Carbon Air Filter Products: D-Mark manufactures and sells activated carbon filtration products for HVAC, industrial, and commercial applications. Products include panel filters, V-bank filters, bulk roll media, rigid filters, pleated filters, and specialty gas adsorbers. Revenue is generated through direct product sales to commercial and institutional customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

D-Mark manufactures and sells activated carbon filtration products for HVAC, industrial, and commercial applications under its proprietary CarbonWeb® media brand. Its portfolio spans V-bank filters, die-cut panels, bulk roll media, pleated filters, rigid filters, and compact gas adsorbers engineered to remove VOCs, odors, diesel exhaust, aviation fuel fumes, acid gases, and wildfire smoke from indoor air. Products are custom-specified and sold directly to airports, hospitals, laboratories, restaurants, museums, and other critical-environment facilities.

Product overview

D-Mark is a manufacturer of activated carbon filtration products for HVAC systems, specializing in molecular air filtration since 1970. The company's product portfolio centers on its proprietary CarbonWeb® activated carbon media—a non-woven adsorptive material engineered to remove odors, gases, vapors, and chemical pollutants. The product lineup includes: V-Bank filters (Adsorball Bulk Carbon, CarbonWeb VMP-AG, VMP-X, VMP-CP15 HEGA); panel and die-cut filters (CarbonWeb III, Ring Panel); pleated filters (CA-13 MERV 13, Carbon Pleat Plus 50/50, HC-Mini, HCX-Mini); bulk roll media (CarbonWeb 90 Wildfire Smoke); and rigid filters (HEGA, CP MERV 15). These products serve diverse applications including wildfire smoke mitigation, VOC removal, diesel exhaust filtration, acid gas neutralization, and general odor control across airports, healthcare facilities, research labs, restaurants, and commercial buildings. D-Mark operates as a subsidiary of Rensa Filtration, acquired in 2018.

Differentiator

Problem solved

Functional benefit

Brands

• CarbonWeb: Proprietary activated carbon media technology used in D-Mark's filtration products. CarbonWeb is an advanced adsorptive material engineered to remove odors, gases, vapors, and chemical pollutants with exceptional efficiency. Unlike loose-fill or pelletized carbon, CarbonWeb's non-woven structure offers higher surface area, lower pressure drop, and longer service life.

Products and services

• Adsorball Bulk Carbon V-Bank Filter A V-bank configured filter featuring a 50/50 blend of carbon and activated alumina that neutralizes gases, designed for HVAC and industrial applications.
• CarbonWeb III Die Cut Panel Die cut panel filter using CarbonWeb and CarbonWeb Plus activated carbon media, providing a fast and effective solution for indoor air quality problems involving bad odors and unpleasant environments.
• CarbonWeb 90 Wildfire Smoke Bulk Media Roll Bulk roll filter media designed to cover building air intake ducts for short-term relief from toxic wildfire smoke, part of the CarbonWeb 20/30T/45/90 roll series.
• CarbonWeb Heavy Duty Carbon Pad Efficient carbon-filled filter media pad with low air resistance and high capacity, featuring 60% activity granular activated carbon with nearly five million square feet of surface area per pound.
• CarbonWeb VMP-AG V-Bank Mini-Pleat V-bank mini-pleat filter designed to remove a broad spectrum of soft and hard acid gases including sulfur dioxide, hydrogen sulfide, hydrochloric acid, and acetic acid.
• CarbonWeb VMP-X V-Bank Mini-Pleat V-bank mini-pleat filter designed to remove and mitigate diesel exhaust and aviation fuel fumes entering a building's HVAC system from outside sources.
• CarbonWeb Rigid Filter HEGA Rigid filter with heavy 645 gsm carbon media and deep pleat design that maximizes carbon surface area for high first-pass removal efficiency.
• CarbonWeb VMP-CP15 V-Bank Mini-Pleat HEGA V-bank mini-pleat HEGA filter combining MERV 15 high-efficiency particulate filtration with 500 gsm of high activity carbon to remove a wide spectrum of odors, wildfire smoke, and VOCs.
• CarbonWeb CA-13 MERV 13 Pleat Combination particulate and gas pleated filter with MERV 13 rating, designed to remove airborne particulate and mitigate nuisance gaseous odors and fumes from outside sources entering HVAC systems.
• CarbonWeb Carbon Pleat Plus 50/50 Pleated carbon filter with 50/50 carbon blend, designed to remove unpleasant odors, exhaust, and smoke from entering HVAC systems, effective against wildfire smoke, jet fuel fumes, and other contaminants.
• CarbonWeb CP Rigid Filter (MERV 15) Rigid filter with MERV 15 rating designed for use in variable air volume (VAV) or constant velocity HVAC systems.
• CarbonWeb HC-Mini Compact Gas Adsorber Compact gas adsorber filter designed to remove or mitigate a broad spectrum of unwanted gases from commercial and industrial facilities.
• CarbonWeb HCX-Mini Compact Gas Adsorber Compact gas adsorber specifically designed to remove or mitigate low concentrations of diesel and aviation fuel exhaust gases entering occupied building spaces via HVAC system air intakes.
• CarbonWeb Ring Panel Ring panel filter with outer polyester layer removing particulates and inner CarbonWeb core containing 60% activity granular activated carbon that removes odors and gaseous pollutants.
• CarbonWeb Plus RigidHEGA MetalBox Rigid HEGA filter with metal header box configuration, part of the CarbonWeb Plus product line for enhanced filtration performance.

Quantifiable outcome

• Nearly five million square feet of surface area per pound of activated carbon

Named customers3 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• Rensa FiltrationcoreStrategic or Co-development Partner · 1 January 2018In 2018, Rensa Filtration acquired Michigan-based D-Mark, enhancing access to leading molecular filtration technologies across its family of filtration companies. D-Mark operates as a brand under the Rensa Filtration corporate umbrella, with its CarbonWeb filters integrated into the broader Rensa product portfolio.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Direct peers

• AAF Flanders: Air filtration manufacturer specializing in commercial and industrial HVAC filtration, including activated carbon and molecular filters — direct competitor in the same product category and customer base.
• Koch Filter: Manufacturer of commercial and industrial air filtration products, including carbon and specialty filters for HVAC applications — directly comparable in target market and product format.
• Camfil: Global leader in air filtration with a substantial molecular and activated carbon filtration portfolio serving commercial, healthcare, and industrial HVAC markets — directly overlapping with D-Mark's CarbonWeb product lines.
• Filtration Group (Circul-Aire): Filtration Group's Circul-Aire division specializes in molecular and gas-phase air filtration for commercial and industrial HVAC, directly comparable to D-Mark's carbon filter portfolio.

Broad incumbents

• Mann+Hummel: Diversified global filtration incumbent with air filtration solutions for HVAC and industrial applications, including activated carbon media — competes broadly with D-Mark across multiple commercial and industrial use cases.
• Freudenberg Filtration Technologies: Global filtration manufacturer serving HVAC and industrial markets with a portfolio including activated carbon filtration — broader incumbent with overlapping capabilities to D-Mark.
• Donaldson Company: Large filtration manufacturer serving industrial and commercial markets with air filtration products including gas-phase and carbon filtration, overlapping with D-Mark's molecular filtration offerings.

Emerging players

• Molecular Products Group: Manufacturer of molecular filtration products and gas adsorbers for industrial safety and air quality applications — overlapping technology and use cases with D-Mark's gas adsorber line.
• PureAir Filtration: Specialty activated carbon air filtration provider serving commercial and industrial applications — smaller niche player with direct product overlap in molecular filtration.

Regional players

• Air Filters, Inc. U.S.-based manufacturer of commercial and industrial air filters, including carbon filtration products — regional peer competing in D-Mark's domestic market with comparable offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@RensaFiltration
• LinkedInlinkedin.com/company/rensa-filtration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about D-Mark