Precision Door Industries
PRODUCTS/PARTS
- Concave Door
- Brochure (PDF - 833KB)
- Specifications (PDF - 156KB)
- Parts List
Concave Underground Mandoor
Now Capable of holding up to 40" Water Gauge (210psf)!!!
The Concave Mandoor system consists of a spring assisted swing Concave Mandoor mounted in a metal framework. The Concave Mandoor is ideal for personal access through areas with high wind loads and differential pressure. The Concave Mandoor thrives in the harshest conditions and in abusive environments. It provides personal safety, fire resistance and is ideal for emergency exits. The Concave Mandoor features a low maintenance, heavy-duty, all steel construction and a torsion spring closing assembly which ensures proper door closure at all times.
| Online Material: |
[PDF - 833KB] Brochure [PDF - 156KB] Specifications [HTML] Parts List |
Image Gallery: (click on images to see larger versions)
Concave Man Door viewed from high pressure side with HPSS control panel to the left 
|
Large transport vehicle entering high pressure side of drift.  | Worker entering high pressure side of drift through concave man door.  |
Worker going though concave man door from low pressure side to high pressure side.  |