GKL Ventilatietechniek

What GKL Ventilatietechniek does

GKL Ventilatietechniek B.V. is a Dutch specialized distributor of ventilation and sun control systems, headquartered in Leiderdorp, Zuid-Holland. Founded approximately 25 years ago, the company operates as a subsidiary of Polvo B.V., a network of approximately 50 ironmongery specialist dealers across the Netherlands. GKL functions as the leading dealer of Duco Ventilation & Sun Control products, distributing natural ventilation grilles, mechanical ventilation systems with heat recovery (including the DucoBox Energy Premium and Comfort series), electronically controlled ventilation components, and exterior sun shading systems to the Dutch construction and installation trades.

The company's product portfolio spans five categories: supply ventilation (standard, sound-dampening, fire-resistant, high-rise, and utility grilles), mechanical ventilation (balanced ventilation units, control valves, and accessories), specialized ventilation (through-wall, through-roof, and duct grilles), louvre grilles (DucoGrille series), and canvas sun shading (DucoScreen and DucoTwin systems). GKL serves four primary vertical segments: residential construction (the principal segment), commercial/utility buildings, schools, and healthcare institutions. Technical differentiation comes from Duco's proprietary electronically controlled ventilation systems using CO2 and humidity measurement-based zoning, acoustic dampening technology (up to 17dB), and integration of ventilation with sun shading in a single product.

GKL's revenue model is one-time product sales through B2B channels, sourcing from Duco and reselling to construction companies, installation firms, property developers, housing associations, timber factories, window suppliers, glass merchants, and painters. Sales are handled by Technical Commercial Advisors covering both inside and outside sales, with consultancy support from design through commissioning. Distribution leverages Polvo B.V.'s centralized administration, ICT, logistics, and purchasing infrastructure. The company serves only the Dutch market, with no geographic expansion disclosed.

Name

GKL Ventilatietechniek

Legal name

GKL Ventilatie Techniek B.V.

Website

https://gkl.nl

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

1–10 employees

Short description

GKL Ventilatietechniek is a Dutch distributor of Duco ventilation and sun control products, supplying construction firms, installation companies, housing developers, and housing associations across the Netherlands from its Leiderdorp base.

Ownership category

akta.pro rank

Headquarters

HQ city

Leiderdorp

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Marketing or Sales, Operations

Revenue model

1. Product Sales: Sale of ventilation and sun control products including natural ventilation grilles, mechanical ventilation systems, and sun protection systems to building and installation companies, timber factories, window suppliers, glass merchants, and painters across the Dutch market

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

GKL Ventilatietechniek is a Dutch dealer and distributor of Duco ventilation and sun control products, headquartered in Leiderdorp, Netherlands. The company supplies natural ventilation grilles, mechanical ventilation systems with heat recovery, exterior canvas sun shading systems, and related ventilation components to construction and installation customers, supported by technical consultancy services spanning design, product selection, and commissioning.

Product overview

GKL Ventilatietechniek is a distributor/dealer of Duco ventilation and sun control products, offering a comprehensive portfolio of natural and mechanical ventilation solutions for residential housing, utility buildings, schools, and healthcare institutions. The product range includes supply ventilation products (standard, sound-dampening, fire-resistant ventilation grilles, grilles with screens, high-rise ventilation grilles), mechanical ventilation systems (ventilation units like DucoBox Energy Premium and Comfort series with heat recovery, control components, valves), specific ventilation solutions (through-wall, through-roof), louvre grilles (DucoGrille series), and canvas sun shading (DucoScreen and DucoTwin systems). The company also provides comprehensive consultancy services from design through implementation.

Differentiator

Problem solved

Functional benefit

Products and services

• DucoBox Energy Premium 570-2ZS Mechanical balanced ventilation unit with heat recovery from Duco's Energy Premium series, used in residential and light commercial ventilation systems.
• DucoBox Energy Comfort 325 Mechanical ventilation unit with heat recovery from Duco's Energy Comfort series for residential ventilation.
• DucoBox Energy Premium 460-2ZS Mechanical ventilation unit with heat recovery from Duco's Energy Premium series, 460-series capacity variant.
• DucoBox Energy Comfort Plus D350 Mechanical ventilation unit with heat recovery from Duco's Energy Comfort Plus series, D350-series capacity variant.
• Duco Acoustic Panel Acoustic ventilation component designed for sound-dampened air transfer between rooms or zones.
• GlasVent 16ZR (AK) Glass-mounted supply ventilation grille for integration with glazing systems in windows and façades.
• Duco Intelli Air Valve Electronically controlled air valve for zonal demand-based extraction using CO2 and humidity sensing.
• Duco RoofFan System Roof-mounted mechanical extraction fan system for building ventilation.
• Duco RoofFan Roof-mounted mechanical extraction fan unit for residential and light commercial ventilation.
• DucoScreen Front 150 External canvas sun shading system, Front 150 series designed for façade mounting.
• DucoScreen Front 150 CAP External canvas sun shading system with cap end-caps, Front 150 series variant.
• DucoScreen Top 120 External canvas sun shading system, Top 120 series designed for top or roof-edge mounting.
• DucoScreen Top 120 CAP External canvas sun shading system with cap end-caps, Top 120 series variant.
• DucoTwin 120ZR AK (+) Integrated window-mounted system combining ventilation and sun shading in a single unit.
• DucoTwin 50ZR FIX Fixed integrated system combining ventilation and sun shading for window installations.
• DucoTop 50ZR Roof-mounted top ventilation system for building exhaust.
• DucoGrille Classic Standard louvre grille for ventilation openings in walls and façades.
• DucoGrille Solid Solid louvre grille with fixed blades for permanent ventilation openings.
• DucoGrille Acoustic Sound-dampened louvre grille designed for noise-sensitive environments.
• DucoGrille Close Closeable louvre grille allowing manual opening and closing of ventilation openings.
• DucoGrille NightVent Night ventilation louvre grille for night-cooling ventilation strategies.
• DucoGrille Transfer Air transfer louvre grille for internal-to-external air transfer.
• Ventilation Consultancy Services Technical design, product selection, and commissioning consultancy for ventilation and sun shading installations, supporting clients from initial project design through installation and commissioning phases.

Named customers8 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• Duco Ventilation & Sun ControlcoreChannel Partner/ Reseller/ DistributorGKL is described as 'dé toonaangevende dealer van Duco Ventilation & Sun Control'. Duco is a leading European producer of ventilation and sun control systems. GKL distributes Duco's complete product range including natural ventilation products, mechanical ventilation with heat recovery, and sun protection systems. Duco is located in Veurne, Belgium along the E40 motorway.
• Polvo B.V.coreStrategic or Co-development PartnerGKL Ventilatietechniek is part of Polvo B.V., a network of approximately 50 ironmongery specialist dealers throughout the Netherlands. Polvo provides centralized administration, ICT, logistics, and purchasing. GKL operates as one of five specializations within Polvo B.V., focused on ventilation technology. Polvo also includes specializations in access systems (Cystac), timber factory support (TIFA), work clothing (Polvo werkkleding en PBM), and RED brand.

Scale indicators1 record

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Renson: Belgian manufacturer of ventilation, sun shading, and outdoor living products. Comparable because it competes across both natural ventilation and integrated sun-shading product lines that overlap with GKL's DucoTwin and DucoScreen offerings.
• Vasco Group: European manufacturer of heating, ventilation, and cooling solutions including ventilation units with heat recovery, competing for specification positions in the same Dutch residential and renovation market as GKL.
• Itho Daalderop: Major Dutch HVAC and ventilation manufacturer offering competing balanced ventilation, heat-recovery units, and indoor climate systems used in the same residential and utility segments as GKL's portfolio.
• Duco Ventilation & Sun Control: Belgian-headquartered manufacturer of ventilation and sun control systems and GKL's principal supplier. Comparable because it defines the product category in which GKL operates and dictates GKL's catalogue, pricing structure, and specification positions.
• Zehnder Group: European supplier of comfortable indoor climate solutions including heat-recovery ventilation units and demand-controlled ventilation systems, competing with DucoBox ranges in Dutch premium residential and commercial projects.

Direct peers

• BUVA: Dutch manufacturer of ventilation grilles, balanced ventilation systems, and acoustic/sun-shading-integrated ventilation products, competing head-to-head with the Duco ranges GKL distributes in Dutch residential construction.
• J.E. Storkair: Dutch supplier of mechanical ventilation with heat recovery, demand-controlled systems, and air-handling units serving residential and commercial segments in the Netherlands — overlapping directly with GKL's mechanical ventilation and control-component portfolio.
• Brink Climate Systems: Dutch manufacturer of balanced ventilation units with heat recovery, CO2-controlled systems, and demand-driven ventilation — directly competing with the DucoBox and Duco Intelli Air Valve ranges that GKL distributes.
• Ubbink: Dutch provider of ventilation, roof terminal, and air distribution products used in residential construction, competing with GKL's through-wall, through-roof, and supply ventilation categories.

Others

• Polvo B.V. sister dealers (e.g. Cystac, TIFA): Other specialized dealer divisions within the same Polvo B.V. parent group covering access systems (Cystac), timber factory support (TIFA), and work clothing. Comparable because they share centralized procurement, logistics, and administration that GKL depends on.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks4 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/gkl-ventilatietechniek

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 GKL Ventilatietechniek