2nd floor centre spur plant room – vent extract grille, one of several that allowed stale air to enter the return air plenum from the Print Floor.
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See full size image Caption: Vent extract grille, one of several that allowed stale air to enter the return air plenum from the Print Floor Description: 2nd floor centre spur plant room - vent extract grille, one of several that allowed stale air to enter the return air plenum from the Print Floor. Alt text: 2nd floor centre spur plant room - vent extract grille Image credit: Gary Tull Photo subject date: 18/08/2010 |