Plenum Box – Un Lined
- Frame: 24, 22 or 20 gauge galvanized steel sheet.
- Spigots: Circular spigots of 75 mm length as standard. Square, rectangular and oval shaped spigots are available as option.
- Optional accessories: Volume control damper.
- Fabricated from 24, 22 or 20 gauge galvanized steel sheet.
- Circular spigots of required diameter and standard length of 75 mm would be fixed to the plenum box. Square, rectangular and oval shape spigots are available as option.
- Plenum boxes with side inlet are standard. Other positions are available as per the site conditions to suit client’s specifications.
- Plenum boxes have hemmed edge at the opening for fixing universal mounting brackets.
- Plenum boxes of length of upto two meters can be manufactured with single spigot. For more than 2 meters plenum boxes will be arranged with multiple spigots.
- Volume control dampers can be fitted to the spigots on request.
- Dummy plenum boxes: Dummy plenum boxes are available to cover inactive linear bar grilles and diffusers.
Plenum opening Vs No of slots:
|No of slots||1||2||3||4||5||6||7||8|
|Plenum opening size in mm|
|1. 16 mm slot opening||48||78||108||138||168||198||228||258|
|2. 20 mm slot opening||52||86||120||154||188||188||256||290|
|3. 25 mm slot opening||57||96||136||174||213||213||291||330|
How to order:
|APB||Specify length x slot opening in mm x mm||Specify in numbers||A = 25 mm thick 24 kg/m3 fiber glass||1 = volume control dampers|
|APB-I||B = 25 mm thick 48 kg/m3 fiber glass|
|APB-D||C = Other insulation|
To order plenum box of size 1200 x 1200 mm, quantity 50 nos.lined with 25 mm thick 24 kg/m3 density fiber glass insulation.
Order as: APB-I – 1200 x 120 – 50 – A.