Sunnerbo Fönster

What Sunnerbo Fönster does

Sunnerbo Fönster AB is a Swedish manufacturer of windows, doors, and related building products, headquartered at Madesjövägen 21 in Nybro, Småland. Founded in 2008 with four employees, the company produces wood and wood-aluminum composite windows in multiple configurations (side-hung, top-hung, pivot, fixed, and ventilation, in 2-glass and 3-glass versions) alongside exterior and interior doors, insect screens, blinds, and pleated shades. Through a series of acquisitions between 2012 and 2016 — Bröderna Johanssons Träförädling AB (Osby, doors, 2012), Sävsjö Snickerifabrik AB (Sävsjö, custom windows, 2014), Osby Snickeriprodukter AB (2015), and 80% of GFAB Sweden AB (glass processing, 2016) — the group built a vertically integrated platform that produces glass, windows, and doors under a single Swedish ownership umbrella, with production facilities exceeding 30,000 m² at Nybro plus an additional 19,000 m² acquired in 2016 (Tunnbindaren 3).

The company sells exclusively through a Swedish network of resellers/dealers (återförsäljare), not directly to end consumers, and supports partners with downloadable product fact sheets, price lists, brochures, installation guides, and CE/performance declarations. Manufacturing is anchored in a hypermodern wood-processing line installed in 2012, advanced CNC machines (additional units delivered in 2016), and proprietary glass processing capability acquired via GFAB. The product catalog spans over 50,000 different window sizes. The company offers a 10-year warranty on factory-painted products covering condensation between glass, function including hardware, and rot damage, and holds Sunda Hus environmental assessment for its 3-glass windows and ventilation hatches.

Group revenue exceeded 500 million SEK in 2016 with over 330 employees group-wide; Sunnerbo Fönster AB itself employed 55 at the time. Peter Karlsson serves as CEO and part-owner. Distribution is concentrated in Sweden (Scandinavia) with no disclosed international footprint.

Name

Sunnerbo Fönster

Legal name

Sunnerbo Fönster AB

Website

https://sunnerbofonster.se

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

Sunnerbo Fönster AB is a Swedish manufacturer of wood and wood-aluminum windows, doors, and window accessories, selling exclusively through a Swedish reseller network to residential homeowners and builders. The group operates three production facilities across Småland and Skåne and is vertically integrated into glass processing.

Ownership category

akta.pro rank

Product category

Window and Door Manufacturing

NAICS

Wood Window and Door Manufacturing (321911), Custom Architectural Woodwork and Millwork Manufacturing (337212), Blind and Shade Manufacturing (33792), Flat Glass Manufacturing (327211)

SIC

Millwood, Veneer, Plywood, & Structural Wood Members (2430), Wholesale-Lumber, Plywood, Millwork & Wood Panels (5031), Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industries

Custom Window & Door Fabrication & Replacement (HSAPAJAI), Window Coverings Manufacturing (Curtains/Drapes/Sheers/Valances) (IMAOAKAC), Windows, Doors & Millwork Distribution (CRAOAFAI), Window Treatments & Shading Systems (Blinds, Shades, Awnings) (IMADAIAN)

Keywords

• Wooden window manufacturing
• Wood-aluminum windows
• Exterior door manufacturing
• Interior door production
• Glass processing products

Headquarters

HQ city

Nybro

HQ country

Sweden

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Window and Door Manufacturing: Manufactures and sells windows and doors through a reseller network. Products include wood windows, wood-aluminum windows, inner doors, outer doors, and glass products. The company operates with vertical integration through multiple acquisitions.
2. Group Revenue (2016): The new Sunnerbo group generated over 500 million SEK in revenue in 2016 following the GFAB acquisition.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Sunnerbo Fönster AB designs and manufactures wood and wood-aluminum composite windows (fixed, side-hung, top-hung, pivot, ventilation, and lift-slide configurations in 2-glass and 3-glass versions), exterior and interior doors, insect screens, blinds, pleated shades, and glass products. Manufacturing is carried out at three Swedish production facilities in Nybro, Osby, and Sävsjö, with products sold exclusively through a Swedish reseller network.

Product overview

Sunnerbo Fönster AB is a Swedish window and door manufacturer operating a multi-brand, multi-facility architecture. The core offering consists of wood and wood-aluminum composite windows (in fixed, side-hung, top-hung, and pivot configurations, with 2-glass and 3-glass options) and exterior/interior doors, all manufactured in-house across three Swedish facilities. The product portfolio is organized around the parent brand (Sunnerbo Fönster) and three acquired subsidiaries: Bröderna Johanssons Träförädling AB (exterior/interior doors, Osby), Sävsjö Snickerifabrik AB (custom windows, Sävsjö), and GFAB Sweden AB (glass processing, Nybro). Accessories include insect screens, blinds, pleated shades, and complementary hardware. The company offers over 50,000 different window sizes through a distributor network.

Differentiator

Problem solved

Functional benefit

Products and services

• Fönster (Windows) Wood and wood-aluminum composite windows in side-hung, top-hung, pivot, fixed, and ventilation styles, available in 2-glass and 3-glass versions for residential and new construction projects. Sold exclusively through the Swedish reseller network.
• Innerdörrar (Inner Doors) Interior doors in moulded, press-moulded, traditional solid, and smooth flat designs, including matching frames and thresholds, manufactured by subsidiary Bröderna Johanssons Träförädling AB.
• Ytterdörrar (Outer/Exterior Doors) Exterior doors including fire-rated versions manufactured by subsidiary Bröderna Johanssons Träförädling in Osby, one of Sweden's most modern door manufacturers.
• Lyftglidparti (Lift-Slide Door Systems) Wood and wood-aluminum clad lift-slide door systems designed for large openings, available as ALGP (with aluminum cladding) and LGP (all-wood) variants.
• Fönsterdörr (Window Door / French Door) Window door (French door) for exterior use, available in wood frame (FD) and wood frame with aluminum cladding (AFD) versions with thermal insulation properties.
• Glass Products (via GFAB Sweden AB) Processed glass products including glass, mirrors, laminated glass, and insulated units manufactured in-house via GFAB Sweden AB's facility in Nybro. Sold through the Sunnerbo reseller network to complement windows and doors.
• Insektsnät (Insect Screens) Insect screens for windows and doors providing protection against insects while allowing ventilation, sold via the Sunnerbo reseller network.
• Plisségardiner (Pleated Blinds) Pleated blinds combining decorative and functional features including sun protection, privacy, thermal insulation, decoration, and blackout, sold to resellers as an add-on to the window range.
• Persienner, lamell- och rullgardiner (Blinds and Roller Shades) Window accessories including blinds, lamella shades, and roller shades for light control and privacy, offered via Sunnerbo resellers.

Quantifiable outcome

• 10-year warranty on factory-painted products covering condensation between glass, function including hardware, and rot damage

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• GFAB Sweden ABcoreStrategic or Co-development Partner · 1 January 2016Sunnerbo acquired 80% of shares in August 2016. Glass processing company formed in 2006 from merger of Gemax Glas AB (founded 1939) and Spegelsliperiet Lindberg & Co AB (founded 1945). Offers one of Europe's most modern facilities for processing glass, mirrors, laminated glass, and insulated units. Lars Lindberg remains as VD with 20% ownership. Makes Sunnerbo unique in offering broad glass solutions alongside windows and doors from own manufacturing.
• Kärnhem ABminorChannel Partner/ Reseller/ Distributor · 1 January 2016Seller of Sävsjö Snickerifabrik AB. Entered into a multi-year window supply agreement with Sunnerbo Fönster for continued window supply to Kärnhem's properties.
• Osby Snickeriprodukter ABminorStrategic or Co-development Partner · 1 January 2015Acquired by Sunnerbo subsidiary Bröderna Johanssons Träförädling AB. Located in Osby with 20 employees and 19 million SEK revenue. Led by Bert and Lars Nilsson.
• Sävsjö Snickerifabrik ABcoreStrategic or Co-development Partner · 1 January 2014Acquired in January 2014. Window manufacturer in Sävsjö with over 90 years of history. Sunnerbo Fönster continues window manufacturing operations. Seller was Kärnhem AB who owned and operated since 2007. A multi-year window supply agreement was signed with Kärnhem AB.
• Bröderna Johanssons Träförädling ABcoreStrategic or Co-development Partner · 1 January 2012Acquired in 2012. Door manufacturing company in Osby with 45 employees. One of Sweden's most modern door manufacturers for both outer and inner doors. This acquisition expanded Sunnerbo's product portfolio to include doors.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Inwido AB: Sweden-listed European market leader in windows and doors with multiple Nordic and continental brands. A much larger incumbent competing in the same wood/aluminium window categories across the same Scandinavian geographies.
• Jeld-Wen Inc. Global manufacturer of windows, doors and related building products with European operations. Broad incumbent competing in standard wood and wood-composite window categories through dealer channels.
• Velux Group: Danish global leader in roof windows and skylights with growing flat-roof and vertical-window operations. Tangentially comparable as a high-end European fenestration brand competing for premium residential projects.

Direct peers

• NorDan AB: Nordic PE-backed window and door manufacturer with strong presence in Sweden and Norway. Comparable wood-aluminium product portfolio, multi-country dealer model, and similar acquisition-driven scale-up story.
• Diplomat Dörr AB: Swedish manufacturer of exterior and interior doors, including fire-rated doors, distributed through dealers. Directly comparable to Sunnerbo's Br\u00f6derna Johanssons subsidiary and to the group's door business.
• SP Fönster (Saint-Gobain): Leading Swedish window manufacturer (acquired by Saint-Gobain) producing energy-efficient timber and timber-aluminium windows for the Swedish market. Directly competes with Sunnerbo in standard wood window configurations through similar builder/dealer routes.
• Elitfönster: One of Sweden's largest wood and wood-aluminum window manufacturers, selling through a dealer network to residential and light-commercial customers. Closely comparable product mix, materials and channel to Sunnerbo.

Regional players

• Rationel Vinduer (DOORS & WINDOWS A/S): Danish manufacturer of timber and timber-aluminium windows and doors sold across Scandinavia and Northern Europe. Comparable premium wood-window positioning with a regional rather than direct Swedish distribution overlap.

Others

• FönsterWiki / Bygma (distribution reference): Large Nordic building-materials distributor carrying competing window brands. Indirectly comparable because Sunnerbo's GTM depends on reaching end customers through dealer-style distribution channels such as Bygma.

Emerging players

• Benders Byggsystem AB: Swedish building-materials group active in roofing, masonry and complementary building components. Relevant comparable for the dealer-channel model and for cross-sell of building-envelope products in the Swedish market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Sunnerbofonster

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

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 Sunnerbo Fönster