Here are two options for calculating your cavity slider trim size... 1) use the formula here, or 2) use the calculator below.
Hallmark Group
For over 30 years, Hallmark has been the trusted partner to New Zealand’s architecture, design, and construction industries, providing world-class solutions to help bring your vision to life.
New Zealand's largest kiwi-owned door manufacturer, Hallmark has a solid reputation for quality and reliability.
Our proactive and communicative approach gives you peace of mind that your order will be manufactured to the highest standards, delivered on budget, and on time.
Visit the Hallmark Group website here.
Contact Us
We do not sell direct to public or independent builders, however if you would like to use a Hallmark cavity slider in your project please see our list of certified resellers here.
For Architects & Commercial Specifiers please see ordering information here.
Call us: 0800 846 237
Email: sales@hallmarkgroup.co.nz
Or drop us a message using the form below: