... clean 3.System testing of air pressure and airflow Aluminium access panel1.Product Name: INSPECTION DOOR, ACCESS PANELS, ... 2.Material : Aluminium alloy and gypsum board3.Standard size: 200*200mm, 300* ... Fireproof, lightweight but strong,precision component,perfect design & finishing6.Packing detail :carton7.Delivery detail:3--4 weeks after receiving deposit ...