Tin Man Sheet Metal

What Tin Man Sheet Metal does

Tin Man Sheet Metal (legal entity TMN LLC, also operating as Tin Man Duct Fabrication) is a privately held custom sheet metal fabrication business founded in 2001 and headquartered at 9230 Prince William Street, Manassas, Virginia. The company fabricates SMACNA-compliant HVAC ductwork, fittings, and accessories in galvanized steel, aluminum, stainless steel (304/316), and black iron, across rectangular, spiral/oval, and welded product lines. Operations run on multiple automated production lines with a computerized pricing system, and every fitting is inspected and signed by a Quality Technician before leaving the shop; the company also supports LEED-compliant ductwork specifications.

The company serves commercial, industrial, residential, and government customers across the greater Washington D.C. metro area, including Virginia, Maryland, the District of Columbia, Delaware, and Eastern West Virginia. Named projects include Aston Martin (Ashburn, VA), Porsche (Silver Spring, MD), Onelife Fitness (Cockeysville, MD), Northwest One and The Ethel Apartments (Washington, D.C.), New Vienna Police Station, and Dominion High School (Sterling, VA). The firm operates a non-competitive fabricator-only model — it never installs — which preserves customer relationships with installation contractors and is reinforced by referral of reliable installers to buyers.

Revenue is generated through project-based, quote-driven one-time sales of custom ductwork and accessories, billed primarily through direct sales with job-site delivery and an online Bill & Pay client portal. Pricing is not publicly disclosed; the company emphasizes competitive and consistent pricing via its computerized pricing system. The business is privately held, has no disclosed venture or private equity backing, and reports a headcount range of 1-10 employees.

Name

Tin Man Sheet Metal

Legal name

TMN LLC

Website

https://tinmansheetmetalllc.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

1–10 employees

Short description

Tin Man Sheet Metal is a privately held, Manassas, Virginia-based custom HVAC ductwork fabricator producing SMACNA-compliant rectangular, spiral, and welded ductwork for commercial, industrial, residential, and government clients across the DC metro area.

Ownership category

akta.pro rank

Product category

HVAC Ductwork Fabrication

NAICS

Custom Roll Forming (332114)

SIC

Sheet Metal Work (3444), Miscellaneous Fabricated Metal Products (3490)

akta.pro primary industry

Sheet Metal & Ductwork Contracting (IMAFALAH)

akta.pro secondary industry

Sheet Metal & Flashing Works (Gutters, Copings, Edge Metal, Downspouts) (IMAFAMAE)

Keywords

• Sheet metal fabrication
• HVAC ductwork
• Custom ductwork manufacturing
• SMACNA compliant ductwork
• Commercial HVAC duct

Headquarters

HQ city

Manassas

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Ductwork Fabrication: Fabrication of custom SMACNA compliant ductwork for commercial, residential, industrial, and government applications. Revenue is generated through one-time project-based orders with pricing based on specifications and quantity. The company offers various duct types including rectangular, round/oval, spiral, and welded duct in materials such as galvanized, aluminum, stainless steel, and black iron.
2. Duct Accessories and Supplies: Sale of duct accessories including snaplock pipe, fittings, access doors, insulation wraps, fire wraps, tapes, and sealants. These are sold alongside main ductwork orders.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Tin Man Sheet Metal is a fully automated custom ductwork fabricator that produces SMACNA-compliant rectangular, spiral/oval, and welded (grease) ductwork — along with a full accessory line of snaplock pipe, access doors, insulation wraps, fire wrap, tapes and sealants, curb adapters, and roof curbs — for commercial, industrial, residential, and government HVAC projects. The company delivers direct to job sites within the greater DC metro area and operates with a quote-based pricing system and per-fitting quality inspection.

Product overview

Tin Man Sheet Metal is a fully automated ductwork fabrication company serving the greater D.C. metro area (Virginia, Maryland, Washington D.C., Delaware, and Eastern WV) since 2001. The company operates multiple production lines to manufacture premium quality ductwork in any quantity. Their product portfolio centers on three core duct product lines—Rectangular Duct & Fittings (G90 galvanized, aluminum, stainless steel 304/316), Spiral and Oval Duct & Fittings (with double wall options), and Grease/Welded Duct (black iron, stainless steel)—complemented by a full range of accessories including Snaplock Pipe & Fittings, Duct Access Doors, Duct Wrap Insulation, Fire Wrap (3M), Tapes and Sealants, Curb Adapters, Roof Curbs/Rails/Caps, Doghouses, and ManBars/Burglar Bars. They also provide CAD services for custom fabrication. All ductwork is fabricated to SMACNA standards with quality inspection on every fitting. The company positions itself as a non-competitive fabricator (not an installation contractor) serving commercial, residential, industrial, and government applications with LEED capability.

Differentiator

Problem solved

Functional benefit

Products and services

• Rectangular Duct & Fittings G90, SMACNA-compliant rectangular duct and fittings fabricated from galvanized, paint grip, aluminum, or stainless steel (304 or 316) to custom specifications, with connectors including TDC, Slip & Drive, flanges, and Bull Nose/Nosing, plus optional acoustical linings (fiberglass, rigid, elastomeric, double wall). Intended for commercial, residential, industrial, and government HVAC projects.
• Spiral and Oval Duct & Fittings Custom spiral and oval duct and fittings with optional double-wall construction (solid core or perf core) and slip-joint, gasket, or flanged connections. Fabricated to custom dimensions for HVAC contractors serving commercial and industrial applications.
• Grease Duct and Welded Duct Custom duct and fittings with welded seams and flanged connections for commercial kitchen grease ducts and industrial applications. Available in black iron (16ga, 14ga, or thicker), stainless steel 304 or 316, and in rectangular, round, and flat oval configurations; all welded seams are guaranteed to pass the light test.
• Snaplock Pipe & Fittings 26-gauge snaplock pipe and fittings in diameters from 4" to 20", including adjustable elbows and Airtites with options for no damper, regular damper, stand-off damper, high-efficiency HETO, bellmouth, and conical configurations. Sold alongside main ductwork orders.
• Duct Access Doors A wide variety of duct access doors with hinged doors, hasps, or cams in multiple sizes, plus clean-out access doors for black iron duct; fabricated to order.
• Duct Wrap Insulation Insulation wrap applied around rectangular or round duct runs, available in 1.5" thick (R4), 2" thick (R6), and 3" thick (R8) options, for energy savings throughout the HVAC system lifecycle.
• Fire Wrap 3M Fire Barrier Duct Wrap 615+ for fire protection in commercial kitchen grease ducts and ventilation systems — a thin, lightweight, flexible alternative to traditional fire protection methods. Stainless steel bands and clips are also available.
• Tapes and Sealants A complete line of duct tapes and sealants including foil tapes (reinforced FSK or non-reinforced), oil-based duct seal, water-based duct seal, aluminum silicone, and hi-temp silicone; bulk pricing available.
• Curb Adapters Custom-fabricated curb adapters for HVAC equipment connections and roof installations.
• Roof Curbs, Rails, and Caps Roof curbs, roof rails, roof caps, and equipment rails fabricated for commercial and industrial HVAC installations.
• Doghouses Custom-fabricated doghouse duct components for HVAC systems.
• ManBars / Burglar Bars Custom-fabricated security bars for commercial and residential building applications.
• CAD Services Computer-aided design services including show drawings and as-built documentation to support custom ductwork fabrication projects.

Quantifiable outcome

• Same-day emergency order turnaround available
• +1 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature3 records

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• SEMCO: Custom commercial and industrial HVAC fabrication company producing ductwork, energy recovery units, and specialty air-handling equipment. Comparable as a custom ductwork fabricator serving commercial and industrial projects with project-based, custom-spec work.
• Ductmate Industries: Manufacturer of ductwork connection systems, accessories, and components used by HVAC contractors. Comparable as a supplier into the same contractor channel, though more focused on accessories/connectors than full duct fabrication.
• AccuDuct: Commercial HVAC ductwork fabricator producing rectangular, round, and spiral duct for contractors. Closely comparable in product mix, B2B contractor GTM, and project-based custom fabrication model.

Broad incumbents

• Loren Cook Company: Established manufacturer of commercial/industrial fans, ventilation equipment, and related sheet metal products. Comparable in commercial HVAC metal fabrication but operates as a broader equipment OEM.
• Greenheck: One of the largest U.S. manufacturers of HVAC equipment, dampers, louvers, and related sheet metal products. Overlaps with Tin Man in commercial ventilation components and duct accessories but serves a much broader customer base.
• Mestek: Diversified HVAC and sheet metal manufacturer producing ductwork, coils, and air distribution components. Competes broadly with Tin Man across rectangular, spiral, and custom ductwork categories, particularly on larger commercial jobs.
• CaptiveAire: National manufacturer of commercial kitchen ventilation systems and HVAC ductwork, including grease and welded duct products overlapping directly with Tin Man's welded/black iron duct line. Operates at much larger scale but competes for the same commercial kitchen and HVAC fabrication projects.
• Engineered Air: Manufacturer of custom and standard HVAC equipment including heat recovery, air handling, and ductwork products. Comparable custom-fabrication capability but at significantly larger scale and broader product portfolio.
• Ruskin: Manufacturer of air control products—dampers, louvers, and air measurement devices—used in commercial HVAC systems. Adjacent in serving the same commercial HVAC contractor ecosystem.

Emerging players

• Linxx Industries: Provider of custom metal fabrication and HVAC component manufacturing serving commercial and industrial markets. Comparable as a custom sheet metal fabricator competing for similar commercial contractor work, though typically at smaller scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/people/Tin-Man-Duct-Fabrication/100063740432458
• LinkedInlinkedin.com/company/tin-man-duct

Compliance1 record

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 Tin Man Sheet Metal