FIEGER Louvre Windows

What FIEGER Louvre Windows does

FIEGER Lamellenfenster GmbH is a German privately held manufacturer of architectural louvre (lamella) window systems, founded in 2000 by Thomas Fieger in Birkenau, Hessen. The company designs and produces a portfolio of aluminium louvre windows (FLW 32, FLW 40, FLL 131, FLM PG/LG, and the FDS custom-design line) built around a patented, maintenance-free rack drive mechanism (Zahnstangenantrieb) that enables infinitely variable opening with slim, flush-finished profiles and invisible mechanics. The product set is complemented by two certified solution systems: AirTec for controlled ventilation (certified to EN 14351-1) and SmoTec for natural smoke and heat exhaust in fire-protection applications (certified to DIN EN 12101-2).

FIEGER sells through a direct, sales-led motion targeting architects, planners, and construction firms, supported by technical consultation across all project phases and an online "Baurechner" (building calculator) tool. Distribution is executed via a German direct-sales channel paired with an international partner network: license partners in Australia and Austria, and preferred partners in Switzerland, Slovenia, Portugal, Italy, Sweden, and Denmark. The company is active in 25+ countries with 15,000+ completed projects spanning education, healthcare, cultural, automotive, and commercial real estate segments (e.g., BMW Welt Munich, Boroughmuir High School Edinburgh, Médiathèque Pontivy, Banbridge Health & Care Centre).

The business operates with a headcount of 13 under founder-led management, with no external private equity or venture capital backing. Revenue is generated through one-time hardware sales of window units, electric/manual/pneumatic drives and accessories, and project-specific professional services for custom façade solutions. Public pricing is not disclosed; project pricing is handled via direct consultation.

Name

FIEGER Louvre Windows

Legal name

FIEGER Lamellenfenster GmbH

Website

https://fieger-lamellenfenster.de

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

FIEGER Lamellenfenster GmbH is a German manufacturer of patented aluminium louvre window systems for building façades, serving architects, planners, and construction firms in 25+ countries across education, healthcare, cultural, and commercial real estate projects.

Ownership category

akta.pro rank

Product category

Louvre Window Manufacturing

NAICS

Metal Window and Door Manufacturing (332321), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industry

Louvers, Vents & Architectural Grilles (IMADAIAM)

Keywords

• Louvre window systems
• Facade ventilation products
• Smoke exhaust windows
• Architectural window manufacturing
• Building envelope hardware

Headquarters

HQ city

Birkenau

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Louvre Window Products: Sale of louvre windows including FLW, FLL, FLM, and FDS product lines with various glazing options and customization capabilities.
2. Drives and Accessories: Electric, manual, and pneumatic drive systems and accessories for window operation and control.
3. Project-specific Solutions: Custom design and special solutions for extraordinary façade projects including consultation, planning, and execution services.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

FIEGER manufactures and sells aluminium louvre (lamella) window systems for building facades, offering the FLW 32, FLW 40, FLL 131, FLM PG/LG, and FDS (custom design) product lines together with electric, manual, and pneumatic drives and accessories. The products use a proprietary maintenance-free rack drive mechanism (Zahnstangenantrieb), originally patented in 2000, to deliver infinitely variable opening for controlled ventilation, natural air conditioning, and certified smoke/heat exhaust. The AirTec (EN 14351-1) and SmoTec (DIN EN 12101-2) solution systems layer certified ventilation and fire-safety functionality onto the core window hardware.

Product overview

FIEGER Lamellenfenster (Louvre Windows) is a hardware manufacturer offering a portfolio of aluminium louvre window systems for building facades. The core product line includes FLW 32, FLW 40, FLL 131, FLM PG/LG, and FDS (custom design) louvre windows. These are supported by two complementary solution systems: AirTec for controlled ventilation (certified EN 14351-1) and SmoTec for smoke/heat exhaust in fire protection (certified DIN EN 12101-2). The products share a common maintenance-free rack drive mechanism, enabling stepless opening for ventilation, natural air conditioning, and smoke exhaust applications. Drives, accessories, and support services are offered as add-ons to the core window products.

Differentiator

Problem solved

Functional benefit

Brands

• AirTec: Controlled ventilation solutions for buildings - certified EN 14351-1
• SmoTec

Products and services

• FLW 32 louvre window FLW 32 is a 3-fold insulating glass or panel filling louvre window with 36–40 mm thickness and high sound insulation / soundproof glazing certified to EN ISO 10140-1/2. Designed for architects and builders seeking controlled ventilation in education, healthcare, and commercial façades.
• FLW 40 louvre window FLW 40 is a customizable louvre window with 2-fold or 3-fold insulating glass or panel filling, 28–32 mm thickness. It serves as an all-purpose ventilation and smoke exhaust solution for façades.
• FLL 131 aluminium louvre system FLL 131 is an insulated aluminium louvre system that acts as a privacy-proof ventilation and smoke exhaust regulator. It supports controlled air flow and smoke evacuation for building façades, including cultural and museum projects such as the Knauf Museum Iphofen.
• FLM PG / FLM LG variable glazing louvre windows FLM PG / FLM LG are louvre windows with no visible profile frame, supporting single-pane glass up to 12 mm or VSG 2×6 mm laminated safety glass. Designed for variable glazing options in architectural façades, e.g. University Brisbane.
• FDS custom design and special construction FDS (Design und Sonderbau) provides custom design and fabrication of louvre windows in all conceivable shapes for extraordinary façade projects, such as the BMW Welt Munich. It targets architects and developers requiring unique, bespoke façade solutions.
• Antriebe (Drives) Electric, manual, and pneumatic drive systems for operating FIEGER louvre windows. The maintenance-free rack drive system enables stepless opening of the windows and is sold as a standalone hardware accessory for projects.
• Zubehör (Accessories) Extended functionality accessories for FIEGER louvre windows, including additional sensors, controls, and mounting hardware for ventilation, security, and energy efficiency. Sold as a standalone product category to complement the core window and drive offerings.
• AirTec controlled ventilation solution AirTec is a controlled ventilation solution system for automatic or manual controlled ventilation in buildings. Certified to EN 14351-1, it provides healthy indoor climate and smart air conditioning for education, healthcare, commercial, and residential buildings.
• SmoTec natural smoke and heat exhaust solution SmoTec is a natural smoke and heat exhaust solution (NRWG) certified to DIN EN 12101-2, providing effective smoke extraction for building fire protection, including installations such as the Mundsburg Tower Hamburg RWA window.

Quantifiable outcome

• 15,000+ successful projects completed
• +3 more outcomes

Named customers15 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

Feature7 records

Partnerships

Three partnerships are on record, tiered minor.

• SUNPLAN AGminorChannel Partner/ Reseller/ DistributorPreferred partner for Switzerland operating from Spahau 1, CH-6014 Littau/Luzern. Contact: Michael Obiltschnig and Michael Wigger.
• M SORA D.D.minorChannel Partner/ Reseller/ DistributorPreferred partner for Slovenia operating from Trg Svobode, SI-4226 Ziri. Contact: Matjaz Rakuscek.
• Ausschreiben.deminorGTM or Marketing PartnerOnline platform for construction tender texts where FIEGER publishes current tender texts for their louvre windows (announced January 2022).

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• SE Controls: UK specialist in smoke and natural ventilation control systems, including certified window automation for smoke exhaust and daily ventilation. Direct overlap with FIEGER's SmoTec and AirTec solution systems in healthcare, education, and commercial segments.
• Warema: German specialist in sun shading systems, external venetian blinds, and window drives for residential and commercial facades. Comparable to FIEGER on external louvre/blade products (FLL) and drive technology for automated facade ventilation.
• GEZE: German manufacturer of window drive technology, smoke and heat exhaust systems (RWA), and door/lock solutions. Closely comparable to FIEGER on drives (Antriebe), SmoTec NRWG systems, and integrated facade automation for commercial and institutional buildings.
• Aumüller: German manufacturer of electric window drives, control systems, and RWA/smoke exhaust components for facades. Comparable to FIEGER on drives, control integration, and smoke/heat exhaust certification within building envelope applications.
• Colt International: UK-based specialist in natural smoke and heat exhaust ventilation systems (NSHEV/NRWG) and climate control solutions. Directly comparable to FIEGER's SmoTec DIN EN 12101-2 certified smoke and heat exhaust product line and the institutional customer base.
• Renson: Belgian manufacturer of ventilation, sun protection, and louvre facade systems for residential and commercial buildings. Direct overlap with FIEGER's controlled ventilation (AirTec) and louvre product lines serving architects and institutional customers across Europe.

Broad incumbents

• Schüco International: Large German aluminum and PVC-U systems provider for windows, doors, and facades globally. Competes broadly in the same institutional/commercial facade space as FIEGER but as a full-line incumbent rather than a louvre-window specialist.
• Kawneer: Global aluminium architectural products company offering window, door, curtain wall, and storefront systems for commercial and institutional buildings. Comparable in facade system scope and customer overlap with FIEGER's institutional references.
• Reynaers Aluminium: Belgian manufacturer of aluminium window, door, curtain wall, and sliding systems for residential and commercial projects. Overlaps with FIEGER on high-performance aluminium window and facade applications but as a broad portfolio incumbent.

Emerging players

• Solarlux: German specialist in glass sliding/folding facades and individual facade solutions including ventilation features. Comparable to FIEGER's FDS custom design offering for extraordinary, architect-driven facade projects in residential and commercial segments.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/fieger

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 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 FIEGER Louvre Windows