What Ventfabrics does

Ventfabrics, founded in 1946 and headquartered at 5520 N. Lynch Avenue, Chicago, Illinois, is a privately held manufacturer and direct-to-consumer distributor of HVAC and sheet metal ductwork accessories. The company's product portfolio spans four proprietary coated-fabric lines for flexible duct connections — Ventel (Teflon-coated), Ventglas (Neoprene-coated), Ventlon (Hypalon-coated), and Ventsil (silicone-coated) — each offered in plain and metaledge variants and engineered for distinct temperature, weather, fire-retardancy, and chemical-resistance requirements. Alongside the fabric lines, Ventfabrics sells a VENTLOK-branded hardware system (latches, hinges, gaskets, dial regulators, and butyl tape) plus galvanized and stamped insulated access doors under SMACNA-compliant specifications, with Ventglas and Ventlon carrying NFPA 701 acceptance for vibration isolation connectors in duct systems. Sub-brands include VENTLINE (rod quadrants), VENTFLEX (metaledge fabric), and the VENTLOK Value Line of economical stainless steel dial regulators.

The company's go-to-market is a direct-to-consumer e-commerce model operated through ventfabrics.com, supplemented by phone ordering via local (773) and nationwide (800) numbers, with most items shipping same-day from its single Chicago facility to the United States (including Alaska, Hawaii, Puerto Rico, Guam, and the US Virgin Islands), Canada, and Mexico. Pricing is unit-based with volume-tiered discounts (for example, fabric rolls available in 150-foot full rolls or 50-foot short rolls at progressively lower per-unit prices as order quantity rises), and the catalog covers 263+ SKUs across 17 product categories. Customer mix is horizontal within the trade segment — primarily HVAC contractors, sheet metal fabricators, and building maintenance professionals — with no public enterprise or distribution partnerships disclosed and no external funding, M&A, or parent-company activity.

Name

Ventfabrics

Legal name

VENTFABRICS

Website

https://ventfabrics.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

11–50 employees

Short description

Ventfabrics is a privately held Chicago-based manufacturer of HVAC coated fabrics (Ventel, Ventglas, Ventlon, Ventsil) and VENTLOK sheet metal hardware, selling a 263+ SKU catalog directly to HVAC contractors and ductwork fabricators via e-commerce and phone orders with same-day shipping across North America.

Ownership category

akta.pro rank

Product category

HVAC Ductwork Accessories

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Ductwork, Duct Fittings & Air Distribution (Diffusers/Grilles/Registers) (IMADANAC)

akta.pro secondary industries

Ductwork Installation & Replacement (Supply/Return) (HSAOAGAC), Range Hood, Vent & Appliance Ducting Installation/Repair (HSAGANAF)

Keywords

• HVAC accessories
• Sheet metal ducts
• Flexible duct connections
• Access door hardware
• Ductwork fabrication

Headquarters

HQ city

Chicago

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, Marketing or Sales, Technology or R&D

Revenue model

1. Product Sales: Direct sales of HVAC fabrics (Ventel, Ventglas, Ventlon, Ventsil in plain and metaledge), VENTLOK hardware (latches, hinges, gaskets, dial regulators), access doors, and related ductwork components through e-commerce platform and phone orders.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Ventfabrics manufactures and distributes HVAC fabrics and ductwork accessories, including specialty-coated flexible connection fabrics (Ventel Teflon-coated, Ventglas Neoprene-coated, Ventlon Hypalon-coated, Ventsil silicone rubber-coated), VENTLOK/Ventlock branded hardware (latches, hinges, gaskets, dial regulators, butyl tape), Ventline rod quadrants, and prefabricated access doors for sheet metal ductwork fabrication.

Product overview

Ventfabrics is a manufacturer of HVAC fabrics and ductwork accessories. Their product portfolio consists of five branded fabric lines for flexible duct connections (Ventel, Ventglas, Ventlon, Ventsil each in Plain Fabric and Metaledge variants), the VENTLOK/Ventlock hardware line (latches, hinges, gasketing, dial regulators, butyl tape), Ventline rod quadrants (square and round), and access doors (galvanized sheet metal and VENTLOK stamped insulated). The fabrics are differentiated by coating materials: Ventel uses Teflon® fluorocarbon resins, Ventglas uses Neoprene®, Ventlon uses Hypalon®/CSM, and Ventsil uses silicone rubber, each offering different temperature ratings and environmental resistance properties. The VENTLOK hardware components (latches, hinges, gaskets) are sold alongside fabrics for complete ductwork fabrication solutions.

Differentiator

Problem solved

Functional benefit

Brands

• VENTLOK: Product brand for latches, hinges, gaskets, and stamped insulated access doors for sheet metal fabrication.
• VENTLOK Value Line
• VENTLINE
• VENTFLEX

Products and services

• Ventel - Plain Fabric Glass fabric coated with duPont Teflon fluorocarbon resins. Air-tight, water-tight, and flame resistant. Used for flexible connections in sheet metal ducts with gray coated side facing inward.
• Ventglas - Plain Fabric Heavy glass fabric double-coated with duPont Neoprene (polychloroprene). Air-tight, water-tight, fire retardant, abrasion and flexing resistant. NFPA 701 compliant for vibration isolation connectors.
• Ventlon - Plain Fabric Heavy glass fabric double-coated with Hypalon/CSM (chlorosulfurated polyethylene). Air-tight, water-tight, fire retardant with superior resistance to sunlight, ozone, and weathering. NFPA 701 compliant.
• Ventsil - Plain Fabric Heavy glass fabric coated with silicone rubber. Air-tight, water-tight, fire retardant. Withstands temperatures up to 500°F while retaining flexibility.
• Ventsil - Metaledge Metal edge fabric variant of Ventsil for flexible connections in sheet metal ducts. Available in standard, transverse, and extra-wide configurations in aluminum and standard materials.
• Ventlon - Metaledge Metal edge fabric variant of Ventlon for flexible connections. Available in standard, extra-wide, and transverse configurations in aluminum, stainless steel, and standard materials.
• Ventglas - Metaledge Metal edge fabric variant of Ventglas for flexible connections. Available in standard, extra-wide, and transverse configurations in aluminum and standard materials.
• Ventlock Latches Non-corrosive alloy latches (zinc and aluminum) for sheet metal access doors. Includes models 100, 140, 202, 220, 222, 260, 260A, 310, 333, 460, 90, 95, 99 and accessories. Available in plain and chrome finishes.
• Ventlock Hinges Hinges for HVAC access doors including models 150, 157, 158, 167, 168, 260, 370. Includes standard and piano hinges in steel and stainless steel.
• Ventlok Gasketing Sealing materials including felt, closed cell sponge rubber, and neoprene sponge rubber in various sizes (166, 176, 177, 296, 299, 380, 385).
• Ventlok Dial Regulators Damper control hardware including dial regulators and end bearings for controlling airflow in duct systems.
• Ventlock Butyl Tape Neoprene gasketing tape for sealing and weatherproofing HVAC ductwork connections.
• Ventline Square Rod Quadrants Quadrants for use with 3/8" or 1/2" square rod. Includes models 555, 609 HIVEL end bearing, 635 stainless steel spring/square end bearings. Used for damper blade control.
• Ventline Round Rod Quadrants Quadrants for use with 1/2" round rod including model 560 in standard and stainless steel variants.
• Value Line Stainless Steel Dial Regulators Economical line of stainless steel dial regulators including V35, V37, V38, V39 models with various insulation accommodation (1", 1-1/2", 2").
• Galvanized Sheet Metal Access Doors 1" thick fiberglass insulated (75 lbs density) double wall, double gasketed doors. Available in hinged and sash styles. 22 gauge galvanized steel frames, 24 gauge panels. SMACNA compliant.
• VENTLOK Stamped Insulated Access Doors Factory-stamped insulated access doors with integrated latches and hinges. 22 gauge door frame, 24 gauge door, 28 gauge pan. Available in sizes from 6" x 8" to 16" x 24".

Segments1 record

Ideal customer profiles1 record

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Duro Dyne: Duro Dyne is a manufacturer and supplier of HVAC fabrication accessories including duct connectors, access door hardware, and flexible fabric connections. Directly comparable to Ventfabrics in product categories, customer base (sheet metal fabricators and HVAC contractors), and direct-ship distribution model.
• SEMCO LLC: SEMCO designs and manufactures custom and modular HVAC ductwork and energy-recovery systems. Overlaps with Ventfabrics on ductwork accessory components and serves commercial HVAC contractors with similar specification-driven sales.
• McGill AirFlow: McGill AirFlow is a manufacturer of HVAC ductwork, fittings, and accessories serving commercial and industrial projects. Comparable to Ventfabrics in targeting sheet metal fabrication shops and offering project-specification components for HVAC systems.
• Air Handling Systems: Air Handling Systems is a manufacturer and distributor of galvanized and stainless ductwork plus related HVAC components. Direct overlap with Ventfabrics in ductwork hardware and accessories sold to HVAC contractors and fabricators.
• Shoemaker Manufacturing: Shoemaker Manufacturing produces ductwork components, access doors, and HVAC specialty products. Direct overlap with Ventfabrics' galvanized and stamped insulated access door lines and the same sheet metal fabricator customer base.
• Flexaust: Flexaust manufactures flexible ducting, hose, and fabric connections used in HVAC, industrial, and dust-collection applications. Overlaps with Ventfabrics on flexible coated-fabric connections for sheet metal ducts and serves a similar contractor customer base.

Broad incumbents

• Ward Industries: Ward Industries manufactures a broad range of HVAC products including ductwork, fittings, and accessories. Larger incumbent serving the same commercial and industrial HVAC channel with overlapping product lines.
• Hart & Cooley: Hart & Cooley is a long-established manufacturer of registers, grilles, diffusers, and broader HVAC components. Larger incumbent with overlapping accessory products (air distribution, dampers) but a much broader catalog aimed at the same HVAC contractor channel.

Emerging players

• KE Fibertec: KE Fibertec manufactures textile-based air distribution and ducting solutions. Comparable to Ventfabrics in coated/textile fabric technology for HVAC air distribution, though more focused on fabric duct diffusers than hardware accessories.

Regional players

• Thermaflex: Thermaflex produces flexible insulated ducting and HVAC accessories, primarily serving European and select international markets. Comparable product category (flexible duct connections) to Ventfabrics but operates in a different primary geography.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ventfabrics-incorporated

Revenue estimate

Valuation estimate

Number of profiles

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 Ventfabrics