Most people who sell door systems have never installed one.
Glenn Lash has.
Before Glenn ever recommended a rapid door to a client, he spent years working as a technician installing, servicing and troubleshooting door systems in demanding commercial and industrial environments.
That hands-on experience means he understands how these systems perform in the real world. He knows what works, what fails and what businesses need from doors that are opening and closing hundreds of times a day.
It is exactly the kind of practical expertise Duffett values.
High performance doors acount manager Glenn Lash
A familiar name in the industry
Many businesses in New Zealand’s industrial and logistics sectors will recognise the Envico name.
Envico built a strong reputation as a specialist in high-performance rapid door systems used in distribution centres, cold storage facilities, food production plants and high-traffic warehouse environments.
Glenn spent a significant part of his career working with Envico, gaining deep experience with rapid door technology and the industries that rely on it.
When Envico was acquired by ASSA ABLOY, one of the world’s largest access solutions companies, Glenn continued within the group and expanded his experience across a wider range of industrial door and access systems.
Now, with Glenn joining Duffett, that expertise becomes part of Duffett’s expanding capability in rapid doors and high-performance industrial access systems.
From technician to trusted advisor
There is a big difference between recommending a door from a brochure and understanding how it performs on site.
Glenn’s technical background means he approaches every project from a practical perspective. He works closely with clients to understand their facilities, operational demands and traffic flow before recommending the right solution.
Having spent years working directly with these systems, he understands how to specify doors that will perform reliably and how to support them with the right servicing and maintenance.
For customers, that means fewer surprises and better long-term performance.
More than rapid doors
While rapid doors are a key area of expertise, Glenn works across a broader range of industrial door and access systems, including:
• high-performance rapid doors
• industrial door systems
• loading dock equipment
• docking systems and warehouse access solutions
Looking at these systems together allows Duffett to help customers design more efficient and reliable facilities.
Projects where reliability matters
Glenn has been involved in delivering door solutions for a number of high-profile projects across New Zealand, including work for:
• Air New Zealand
• the new IKEA store in Auckland
• Fisher & Paykel Healthcare
Facilities like these require door systems that perform reliably in high-traffic environments where safety, speed and operational efficiency are critical.
Strengthening Duffett’s capabilities
Celebrating 100 years in the door industry, Duffett has long specialised in commercial and industrial door solutions across New Zealand.
With Glenn now part of the team, Duffett strengthens its capability in rapid doors, high-performance access systems and loading dock solutions.
Combined with Duffett’s local manufacturing, nationwide service network and long-term maintenance support, customers benefit from a complete door solution delivered by a single experienced team.
Talk to the Duffett team
Whether you are upgrading existing doors, designing a new facility or looking to improve operational efficiency, Glenn and the Duffett team can help.
Get in touch to discuss the right door and access solutions for your site.

