What Athmer does

Athmer oHG is a German manufacturer of door sealing and finger protection systems, headquartered in Arnsberg-Müschede since its founding in 1963 (with company history extending over 60 years). The company operates two core product divisions. The Door Seals division manufactures automatic drop seals (brands Rainstop®, Schall-Ex®, Stadi, Stadi LD), perimeter seals, brush seals, thresholds in aluminum and stainless steel, and complete sealing door systems (Comfort-Plan®, Nadi®, WE-Dicht, Rundumdicht M-12, Rundumdicht Pivot). The Finger Protection division (Athmer Fingerschutz®) produces roller blinds, protective profiles, main closing edge clamps (HS-25), and glass-door protection solutions designed to prevent fingers being trapped at door closing edges. A third product line, Porti®, offers door opening restrictors that replace floor-mounted door stops.

The company's products serve commercial and institutional building applications, with primary end markets in education (nurseries and schools), healthcare (hospitals, clinics, doctors' surgeries), public administration, hospitality (hotels), and financial services (banks). Finger protection products meet TÜV/GS certification under EN 16654 with verified durability through 1 million test cycles, and products are tested under EN 16005 for automatic doors and EN 16034/EN 1634 for integration with fire and smoke protection doorsets. All manufacturing occurs in Germany, with the company claiming "millions of installations worldwide."

Athmer generates revenue primarily through hardware sales via a two-tier distribution model: specialist dealers and dedicated direct sales representatives. Distribution is supported by wholly-owned regional sales subsidiaries in Qingdao (China), Singapore, Bangalore (India), and Dubai (UAE), serving China Mainland, Southeast Asia, South Asia, and the Middle East respectively. The company is privately held as an oHG partnership owned by C.-J. Cronenberg and W.-H. Cronenberg, affiliated with the diversified Julius Cronenberg Sophienhammer (JCS Group). Pricing is quote-based and not publicly disclosed. Technical center services provide consulting and specification support to architects, door processors, and specifiers.

Name

Athmer

Legal name

athmer oHG

Website

https://athmer.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

51–100 employees

Short description

Athmer oHG, headquartered in Arnsberg, Germany, manufactures automatic drop seals and finger protection systems for doors, serving education, healthcare, hospitality, and public facility markets through specialist dealers and wholly-owned regional sales offices in Asia and the Middle East.

Ownership category

akta.pro rank

Product category

Door Hardware and Safety Systems

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Weatherstripping, Thresholds & Door/Window Seals (IMADAIAL)

akta.pro secondary industry

Architectural Hardware & Door Controls (Hinges, Locks, Closers, Panic Devices) (IMADAIAI)

Keywords

• Automatic drop seals
• Finger protection systems
• Door hardware manufacturing
• Door sealing systems
• Accessibility threshold solutions

Headquarters

HQ city

Arnsberg

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Door Seals: Sale of automatic drop seals, perimeter seals, brush seals, and thresholds for doors. Products are sold to specialist dealers and through sales representatives for commercial and residential door applications.
2. Finger Protection Systems: Sale of finger protection roller blinds, pinch guards, protective profiles, and related accessories. Primarily targeted at nurseries, schools, hospitals, and public facilities.
3. Technical Services: Technical center services providing consulting, product selection assistance, and support for architects, processors, and specifiers.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Athmer oHG develops and manufactures automatic drop seals, perimeter and brush seals, thresholds, and sealing door systems for interior and exterior doors. The company also produces the Athmer Fingerschutz® line of finger protection devices (roller blinds, protective profiles, main closing edge solutions, glass door protection) and the Porti® door opening restrictor. Products are engineered and produced in Germany and are TÜV/GS certified according to EN 16654, primarily serving nurseries, schools, hospitals, public buildings, hotels, and automatic door manufacturers.

Product overview

Athmer oHG is a technology leader in door seals and finger protection systems, offering two core product categories. The Door Seals division includes automatic drop seals (Rainstop®, Schall-Ex®, Stadi, Stadi LD), perimeter seals, brush seals, thresholds, and complete sealing door systems (Comfort-Plan®, Nadi®, WE-Dicht, Rundumdicht M-12/VHH M-12, Rundumdicht Pivot). The Finger Protection division (Athmer Fingerschutz®) provides roller blinds, protective profiles, main closing edge protection (HS-25), and glass door protection, all designed to prevent finger injuries on door closing edges. Additionally, Porti® door opening restrictors eliminate floor door stops. The company also provides digital planning tools and comprehensive product finders. All products are manufactured in Germany at the Arnsberg facility.

Differentiator

Problem solved

Functional benefit

Brands

• Athmer Fingerschutz®: Finger protection systems for doors, preventing injuries by avoiding the risk of fingers being trapped on closing edges. Products include roller blinds, pinch guards, and protective profiles for kindergartens, hospitals, and public facilities.
• Rainstop®
• Schall-Ex®
• Comfort-Plan®
• Porti®

Products and services

• Automatic Drop Seals Self-actuating drop seals that automatically seal doors when closed, preventing drafts, moisture, noise, and insects. Designed for swing, hinged, and sliding doors in commercial and residential buildings.
• Rainstop® Drop seal product designed for weather protection and rain resistance on exterior doors.
• Schall-Ex® Sound insulation drop seal providing high-level acoustic performance to prevent sound transmission through interior doors.
• Schall-Ex® glass Sound insulation seal system designed specifically for glass doors, providing acoustic dampening for glass door applications.
• Stadi Drop seal product line for interior and exterior door applications with various actuation mechanisms.
• Stadi LD Low-profile drop seal variant for doors requiring minimal clearance while maintaining sealing performance.
• Perimeter Seals Damping profiles for interior doors enabling quiet door closing; exterior perimeter seals protect against moisture, noise, and insects, with sound and smoke protection for functional doors.
• Brush Seals Brush seals for sealing doors and sliding doors, ensuring tight sealing on uneven floors; available in polyamide and horsehair variants.
• Thresholds Aluminum and stainless steel threshold plates providing stylish room-to-room connections and bridging gaps between different floor types and thicknesses, including barrier-free transition options.
• Comfort-Plan® sealing door system Complete barrier-free sealing system for exterior doors combining an automatic drop seal and a zero threshold, enabling accessibility together with weather sealing.
• Nadi® sealing door system Complete sealing door system providing comprehensive door sealing for interior and exterior applications.
• WE-Dicht sealing door system Perimeter sealing system for door applications.
• Rundumdicht M-12 sealing door system Comprehensive sealing system for complete door perimeter sealing.
• VHH M-12 sealing door system Complete sealing system for door applications.
• Rundumdicht Pivot sealing door system Sealing system designed specifically for pivot doors.
• Athmer Fingerschutz® Comprehensive finger protection line including roller blinds, protective profiles, and pinch guards that prevent fingers from being trapped on door closing edges in kindergartens, hospitals, and public facilities.
• Roller Blinds (Finger Protection) Roller blind finger protection systems that cover the gap between door and frame to prevent finger-trapping injuries.
• Protective Profiles Hinge-side protective profiles covering the closing edge on the hinge side to reduce injury risk.
• Main Closing Edge (HS-25) Clamp stop system for the main closing edge protecting against finger trapping at the primary door closing point.
• NR-32 UniSafe Glas (Protection for Glass Doors) Finger protection solution specifically designed for glass doors.
• Panic Fitting & Ram Protection Bar Installation Installation system that combines panic hardware with ram protection on doors.
• Porti® (Door Opening Restrictor) Door opening restrictor eliminating the need for floor door stops, preventing tripping hazards and facilitating cleaning, suitable for underfloor heating in hotels, public facilities, banks, and doctors' surgeries.
• BR+ Protective System Cover profile protecting the secondary closing edge on the hinge side as a single product for multiple applications.
• Product Finder Tool Digital selection tool enabling specification by usability requirements (accessibility, fire protection, sound insulation), door type, materials, and technical specifications for easy planning, measuring, and configuration of Athmer products.

Quantifiable outcome

• Products proven millions of times in buildings worldwide
• +1 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• GEZE GmbH: German manufacturer of door, window, and safety technology headquartered in Leonberg, including automatic door systems, door closers, and smoke/heat extraction. Highly comparable to Athmer given shared German engineering heritage, overlap in automatic door and safety product lines, and similar B2B specification channel approach.
• Trelleborg AB: Swedish industrial group with a Building Solutions / sealing-solutions segment that includes door and window sealing profiles and gaskets. Overlaps with Athmer's automatic drop seals, perimeter seals, and brush seals in material technology and end-customer segments.
• Gretsch-Unitas Group (GU): German manufacturer of window and door hardware, including automatic door systems, locks, hinges, and sealing systems. Closely comparable German specialty manufacturer with overlapping product categories in door hardware and a similar B2B specification model.
• Record (Entrematic): Manufacturer of automatic sliding and swing door systems, now part of Assa Abloy/Entrematic. Overlaps with Athmer in the automatic door operator and safety category, particularly relevant for EN 16005-compliant secondary closing-edge protection.
• Tormax (Tormax UNILOG): Swiss manufacturer of automatic door systems, door drives, and safety sensors. Comparable to Athmer in the automatic door and finger-protection ecosystem, sharing EN 16005-driven specification demand.

Broad incumbents

• dormakaba Holding AG: Swiss-listed global leader in access and security solutions, including door hardware, automatic doors, and entrance systems. Broader portfolio than Athmer but directly comparable product categories (door seals, automatic door safety) and overlapping customer base of architects and facility operators.
• ASSA ABLOY AB: Swedish-listed global leader in door opening solutions and access control. While far larger and broader, ASSA ABLOY competes in adjacent door hardware and sealing categories and serves the same hospital, school, and public-facility specification markets as Athmer.
• Hörmann Group: German family-owned manufacturer of doors, frames, and operators for residential, commercial, and industrial applications. Directly comparable German specialty manufacturer with deep specification presence across European construction and a similar channel-driven model.
• Allegion plc: US-listed pure-play door hardware and access solutions company. Broader portfolio than Athmer but shares the specification-channel go-to-market and overlapping regulatory-driven demand (fire/smoke doors, accessibility, healthcare and education facilities).

Others

• Athmer parent JCS / Cronenberg portfolio: Internal comparator noting that Athmer sits within the JCS Group (Julius Cronenberg Sophienhammer) — a diversified industrial conglomerate whose other holdings could provide cross-selling or adjacent-product context for evaluating Athmer's strategic positioning.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/athmer-ohg

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries4 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 Athmer