Contract Notice - General Guideline, Standard Regulation Open Procedure (Construction Work) Air Conditioning Systems Air Conditioning Units Total Air Volume Approx. 35,5000 M³/H 4.0 Pcs Smoke Extraction Fans Total Air Volume Approx. 32,000 M³/H 2.0 Pcs After-Flow Fans Total Air Volume Each Approx. 12,500 M³/H 2.0 Pcs Galvanized Sheet ... More (EXPIRED)