Woller, Sälzer & Hammerglass – The Future of Security Without Compromise

At Woller Oy, we believe that impossible is just an opinion—not a reality. Partnering with Sälzer and Hammerglass, we deliver the lightest and thinnest solutions for non-splintering bulletproof and blastproof windows and doors, ensuring top-tier security without excessive weight or bulk.

Space matters

Our slim 90 mm frames (with select solutions at 135 mm) fit seamlessly into tight spaces, while competitors' models can exceed 150 mm, demanding significant structural modifications.

Woller Oy has been a trusted installer since 2019, protecting vital assets with innovative, lightweight security solutions. With over 30 years of experience in building and infrastructural security, Woller became a manufacturer and developer of new light and thin security sollutions.

Our partners are:

With over 50 years of experience and innovations in security sector, Sälzer has supplied security systems all across the World for government agencies, defense forces, prisons, police departments, banks and etc.

With over 20 years of experience, Hammerglass has supplied government agencies, defense forces, police departments, banks, and critical infrastructure across Finland, Sweden, Canada, and beyond.

Example of possible solution

Unlike traditional security installations, our solutions are engineered for efficiency. As an example our EXR2 and BR4-rated windows, designed to withstand blasts and handgun fire, weigh only 90 kg per square meter—nearly half the weight of competitor products, which often exceed 180 kg. This weight reduction eliminates the need for reinforced steel frames, speeds up installation, and reduces structural stress on older buildings.

Executed project

Additionally, our portfolio includes blast-proof and bulletproof doors and windows with customized signal-blocking capabilities, ensuring defense against surveillance and electronic threats. We can produce both civilian market and have NATO-approved products, tailored to meet specific security demands.

When security cannot be compromised, Woller Oy & Hammerglass deliver protection that is strong, smart, thin and efficient.

Advanced Security Windows, Facades & Doors – Proven Protection for Critical Infrastructure

At Woller, Sälzer & Hammerglass, we don't just offer security—we redefine it. Our cutting-edge bulletproof, blastproof, and forced-entry-resistant windows and doors meet the highest industry standards, ensuring uncompromising protection for government, defense, and high-security facilities.

Delivered Security Solutions:

FB 4/6/7 + RC3/4 + BR 4/6/7 + EI30 + P7B + One-Way Mirror
BR 4/6/7 + FB4/6/7 + RC3/4/5
FB 4/6/7
RC3/4/5/6
EXR1/2/3 + FB6 + RC3/4
EPR1/2 + FB4/6/7 + EI30 + RC3/4
EPR1/2 + RC3/4
EI120 + RC3/4

Custom-Built Security Solutions – Tailored for Your Needs

We offer a wide range of bulletproof and blastproof configurations, including:

BR4/6/7 + EXR2/3 + RC3/4
RC3/4 + EXR2/3
FB4 + EXR5
FB4/6 + BR4/6 + P8B + Energy H + One-Way Mirror
EXR1/2/3/4/5
EPR1/2/3/4
EXV15/19/25

Our portfolio includes high-security prison doors and windows, rigorously tested to EN break-in standards from both sides to ensure total containment and protection.

Almost all solutions available with Mil.Spec or civilian grade signal blocking provided by www.signalblock.info

Certified Performance – No Compromise on Quality.

We believe security should be measured, tested, and certified—not just promised. Every glass, window frame, and signal-blocking component we offer has undergone rigorous certification, ensuring optimal performance in the most demanding environments.

Our Certified Products Include:

EN 1063 – BR4NS, BR6NS, BR7NS (Ballistic Resistance)
EN 13123-1 / 13124-1 EPR4 (Blast Protection)
EN 13123-2 / 13124-2 EXR5 (Blast Protection)
ISO 16933 – EXV15, EXV19, EXV25 (Blast Protection)
EN 1523-1524 – FB4, FB6, FB7 (Bulletproof Security)
EN 1627 – RC3, RC4, RC5, RC6 (Break-In Resistance)
EN 13501-2 – EI30 / EW60 (Fire Resistance)
EN 356 – P7B, P8B (Impact Resistance)
ASTM F3057-14 (Signal Blocking)
IEEE Std 299-2006 (Signal Blocking)
MIL-STD-188-125 (Emp / Signal Blocking)
ASTM D4935-10 (Signal Blocking)

Every certification confirms our commitment to reliability, ensuring that our solutions withstand gunfire, explosives, forced entry attempts, and extreme impact scenarios. Certificates are available upon request, ensuring complete transparency in protection standards.

For those who demand tested and trusted physical and electronic security, Woller Oy & Hammerglass deliver solutions that stand the test of time.