Flexmaster U.S.A.
Flexmaster U.S.A. manufactures flexible HVAC ductwork, sheet metal fittings, and air-distribution accessories for US sheet metal workers and HVAC contractors across all 50 states, leveraging proprietary mechanical-locked and glue-free construction.
- Company typePrivate
- Founded1977
- HeadquartersHouston, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Flexmaster U.S.A. does
Flexmaster U.S.A. is a Houston, Texas-based manufacturer of HVAC air-distribution products, operating as a brand under Masterduct, INC., a US subsidiary of the German multinational Masterflex Group. The company produces insulated, acoustical, and non-insulated flexible ductwork, a broad line of sheet metal fittings (sleeves, spin collars, conicals, HOK conicals, STODs, saddle taps, LDS/2000G/UT 3000G fittings, square-to-rounds, side-inlet diffuser boxes), Triple Lock metal duct systems including medical-grade and sound-attenuator variants, Inspector Series access doors, return air kits, and accessories such as nylon/LS/spin clamps, FlexRight elbows, and thermo sleeves.
Core technology centers on a proprietary mechanical-locked inner core that retains shape at 90-degree bends and offsets without reinforcement, combined with an industry-unique glue-free and adhesive-free manufacturing process. All flexible duct products carry the ETL mark tested to UL181 standards, and the HVAC product line is sold with a 20-year warranty claimed to be the longest in the category. The company also publishes a Mission Statement, Code of Conduct, and Modern Slavery Act disclosure on its site.
The business model is B2B hardware sales of physical HVAC components, priced through an online quoting platform (masterflexquoting.com) rather than publicly disclosed list pricing. Flexmaster goes to market exclusively through a nationwide network of authorized representatives and distributors covering all 50 US states including Hawaii; end customers are sheet metal workers and HVAC contractors specifying Flexmaster products for residential and commercial air-distribution installations. The company employs 51-100 people across its Houston headquarters and a Houston warehouse/distribution facility.
Flexmaster U.S.A. firmographics
Firmographics- Name
- Flexmaster U.S.A.
- Legal name
- Masterduct, INC.
- Website
- https://flexmasterusa.com
- Company type
- Private
- Founded year
- 1977
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Flexmaster U.S.A. manufactures flexible HVAC ductwork, sheet metal fittings, and air-distribution accessories for US sheet metal workers and HVAC contractors across all 50 states, leveraging proprietary mechanical-locked and glue-free construction.
- Ownership category
- akta.pro rank
Flexmaster U.S.A. industry classification
Industry- Product category
- HVAC Ductwork and Sheet Metal Fittings
- NAICS
- Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)
- SIC
- Sheet Metal Work (3444), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)
- akta.pro primary industry
- Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)
- akta.pro secondary industry
- Ductwork, Duct Fittings & Air Distribution (Diffusers/Grilles/Registers) (IMADANAC)
Keywords
Where Flexmaster U.S.A. is headquartered
LocationHeadquarters
- HQ city
- Houston
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Flexmaster U.S.A. business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- HVAC Products Sales: Sale of insulated, acoustical, and non-insulated flexible duct for HVAC applications, along with sheet metal fittings and accessories.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels2 records
Flexmaster U.S.A. product offering
Product offeringCore offering
Flexmaster U.S.A.® manufactures insulated, acoustical, and non-insulated flexible ductwork for HVAC applications, along with a full line of sheet metal fittings, Triple Lock metal duct systems (including medical-grade and sound attenuator variants), access doors, return air kits, flexduct kits, and HVAC accessories such as clamps, elbows, and thermo sleeves. The company sells these manufactured products to HVAC contractors and sheet metal workers through a nationwide U.S. network of representatives and distributors.
Product overview
Flexmaster U.S.A. is a manufacturer of HVAC air distribution products, operating as part of the Masterflex Group. The company offers a comprehensive portfolio centered around flexible duct systems and sheet metal fittings. Core products include insulated, acoustical, and non-insulated flexible duct for HVAC applications, complemented by sheet metal fittings ranging from basic sleeves and collars to specialized components like HOK conicals, STODs, and various fittings. The product line includes Triple Lock metal duct systems available in standard, medical grade, and sound attenuator variants. Supporting products include access doors (Inspector Series), return air kits, flexduct kits, and accessories such as nylon clamps, LS clamps, spin clamps, FlexRight elbows, and thermo sleeves. All flexible duct products carry the ETL mark tested to UL181 standards and come with a 20-year warranty.
Differentiator
Problem solved
Functional benefit
Products and services
- Flexible Duct Insulated, acoustical, and non-insulated flexible duct for HVAC applications. Features a mechanical-locked inner core that maintains shape at 90-degree bends and offsets, and is manufactured without glues or adhesives. All products carry the ETL mark tested to UL181 standards and come with a 20-year warranty.
- Triple Lock Metal Duct System Metal duct system featuring triple lock technology for secure connections in HVAC installations. Available in standard, medical-grade, and sound attenuator variants.
- Triple Lock Medical Grade Duct Medical-grade variant of the Triple Lock duct system designed for healthcare facility HVAC applications.
- Sheet Metal Fittings Sheet metal fittings including sleeves, spin collars, conicals, HOK conicals, STODs, saddle taps, LDS fittings, 2000G fittings, UT 3000G fittings, square-to-rounds, round-to-rounds, and side inlet diffuser boxes. Designed for sheet metal workers and engineered for HVAC air distribution installations.
- Inspector Series Access Doors and High Pressure/Tab Doors Inspector Series access doors and high pressure / tab-style access doors for HVAC applications. The Inspector Series is stated to meet or exceed the highest quality standards for HVAC access doors.
- Sound Attenuator (SA) Standalone sound attenuator for HVAC noise reduction applications, used to attenuate noise transmitted through the ductwork system.
- Return Air Kits Complete return air kit solutions for HVAC ductwork systems, packaged for installation convenience.
- Flexduct Kits Pre-packaged flexible duct kits for convenient HVAC installation.
- HVAC Clamps and Accessories HVAC installation accessories including nylon clamps, LS clamps, spin clamps, FlexRight elbows, and thermo sleeves for securing and routing flexible duct connections and providing thermal insulation at joints.
Companies that use Flexmaster U.S.A.
Customer profileSegments1 record
Ideal customer profiles1 record
Flexmaster U.S.A. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Flexmaster U.S.A. partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Masterflex GroupcoreFlexmaster U.S.A. is a brand under the Masterflex Group, which includes other brands: MASTERFLEX (spiral hoses & connection systems), MATZEN & TIMM (vulcanised moulded parts & hoses for aerospace), NOVOPLAST/SCHLAUCHTECHNIK (smooth hoses & profiles for industry & medical technology), FLEIMA-PLASTIC (injection moulding for medical technology), MASTERDUCT (spiral hoses & specialist HVAC hose systems), and APT (fluoropolymer tubing).
Scale indicators2 records
Recent moves6 records
Expansion highlights5 records
Flexmaster U.S.A. competitors and assessment
Company assessmentDirect peers
- United Enertech: United Enertech manufactures HVAC grilles, registers, diffusers, and duct accessories, competing with Flexmaster in the sheet metal fittings and air distribution components category.
- Masterduct (Masterflex Group brand): Masterduct, Flexmaster's sister brand within the Masterflex Group, produces spiral hoses and specialist HVAC hose systems that overlap with Flexmaster's flexible duct business and share the same Houston distribution footprint.
- Atco Rubber Products: Atco is a leading US manufacturer of flexible HVAC duct products, directly competing with Flexmaster's core insulated and acoustical flexible duct offerings in residential and commercial air distribution.
- Sheet Metal Connectors: Sheet Metal Connectors fabricates HVAC duct fittings and accessories, directly competing with Flexmaster's sheet metal fittings line (sleeves, conicals, STODs, saddle taps).
- Thermaflex: Thermaflex manufactures flexible ducts and HVAC insulation products, overlapping with Flexmaster's flexible duct and acoustical duct product lines for commercial HVAC applications.
Broad incumbents
- Titus HVAC: Titus manufactures air distribution products including diffusers, grilles, and VAV terminals, overlapping with Flexmaster's diffuser boxes and air distribution fittings for commercial HVAC systems.
- Hart & Cooley: Hart & Cooley is an established manufacturer of HVAC registers, grilles, and specialty sheet metal products, offering a broader portfolio of air distribution components than Flexmaster's specialist ductwork focus.
- Lindab: Lindab is a European-established broad HVAC components manufacturer offering ductwork, fittings, and ventilation systems, competing with Flexmaster at the higher end of commercial HVAC specifications.
- Greenheck: Greenheck is a large US manufacturer of HVAC equipment including fans, dampers, and louvers, often bundling air distribution components in systems sales alongside Flexmaster's ductwork category.
Emerging players
- DuctSox: DuctSox offers fabric-based air dispersion systems as an alternative to traditional metal flexible ductwork, competing for specification slots on commercial projects where Flexmaster's duct products are typically specified.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Flexmaster U.S.A. social profiles
Digital presenceFlexmaster U.S.A. compliance and trust
Trust signalCompliance1 record
Flexmaster U.S.A. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flexmaster U.S.A. leadership team
Management profileNumber of profiles
Profiles6 records
Flexmaster U.S.A. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flexmaster U.S.A. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flexmaster U.S.A.
What does Flexmaster U.S.A. do?
Flexmaster U.S.A.® manufactures insulated, acoustical, and non-insulated flexible ductwork for HVAC applications, along with a full line of sheet metal fittings, Triple Lock metal duct systems (including medical-grade and sound attenuator variants), access doors, return air kits, flexduct kits, and HVAC accessories such as clamps, elbows, and thermo sleeves. The company sells these manufactured products to HVAC contractors and sheet metal workers through a nationwide U.S. network of representatives and distributors.
Is Flexmaster U.S.A. a public or private company?
Flexmaster U.S.A. is a private company. It is classified as corporate owned and is currently operating.
When was Flexmaster U.S.A. founded?
Flexmaster U.S.A. was founded in 1977. It employs 51 to 100 people.
Where is Flexmaster U.S.A. based?
Flexmaster U.S.A. is headquartered in Houston, United States, in the North America region.
How does Flexmaster U.S.A. make money?
One revenue line is on record: HVAC Products Sales.
Who are Flexmaster U.S.A.'s main competitors?
Direct peers on record are United Enertech, Masterduct (Masterflex Group brand), Atco Rubber Products, Sheet Metal Connectors and Thermaflex. Broad incumbents are Titus HVAC, Hart & Cooley, Lindab and Greenheck. DuctSox is listed as an emerging player.
Does Flexmaster U.S.A. have an API?
No public API is recorded for Flexmaster U.S.A..
What industry is Flexmaster U.S.A. in?
Flexmaster U.S.A.'s product category is HVAC Ductwork and Sheet Metal Fittings. Its primary akta.pro industry code is IMAHAKAG, Ventilation, Ducting & Air Distribution Equipment, with a secondary code of IMADANAC, Ductwork, Duct Fittings & Air Distribution (Diffusers/Grilles/Registers). Its NAICS code is 33341 and its SIC code is 3444.