Round plenum boxes in galvanized steel with side entry spigot.            
Material: Galvanised steel           
Thinkness: 0.75mm            
Size:            
P:130    q:200    dia.80            
P:165    q:200    dia.100            
P:205    q:200    dia.125            
P:255    q:250    dia.160            
P:320    q:300    dia.200            
P:360    q:300    dia.200            
P:405    q:350    dia.250