Zowor Door Industry Co., Ltd
Make Zhongwo a fixed star in the development history of the door industry.
Add to Cart
90 Mins UL Listed Metal Fire Rated Steel Exit Door With 1.5mm Thick Hollow Metal Frame Emergency Bar
UL Listed Metal Fire Rated Steel Exit Door
Fireproof steel doors are very helpful in helping people in the event of a fire and reducing property damage. UL certified and labeled steel fire doors help prevent the fire from spreading within at least 180 minutes. Fireproof doors require automatic closing and a secure latch.
Zhongwo uses advanced technology and imported production lines to provide high stability for fire protection doors. Zhongwo offers customers a wide range of services for importing fire doors from China. We support our customers at every level through design, research and development, packaging, distribution and after-sales service.
All Zhongwo UL Steel Fire Doors are certified according to UL10 (b), UL10 (c), NFPA252, CAN / ULC S104. That is, it maintains fire integrity for up to 1.5 hours.
Frame:
The Frame Openning:
| Nominal opening | The distance measured between the frame. The net opening is the measurement of the door slab. |
| Undercut | Clearance between the bottom of the frame and the door |
| Door width and door height | Measurements of the width and height inside of the frame, less the clearance |
concept:
Steel is very strong and, in unchanged conditions, can withstand significant natural and man-made abuse. Properly installed and maintained perforated metal doors are typically 30 years or older.If repairs are required, they are often performed in the field at relatively low cost. Steel doors have a low cost of ownership compared to other door materials.
You may also hear these doors and frames called "iron" or "perforated metal". Architects generally call them "iron" and distributors and manufacturers say "perforated metal". Note that they refer to products. The same and the terms are interchangeable.