This structure was completely below ground with raised entrances which would have been level with the surface at the time of construction. Subsequent development raised ground-level, totally obscuring any trace of the structure. Once fully exposed, it was observed that the shelter was roughly aligned north to south. At some point after 1949, shelter F2 was partially destroyed by the alterations to Ypres Road that probably accompanied the demolition of the Military Hospital. Because of this, it was not possible to collect much data concerning the northern entrance of shelter F2. It is not possible to say how long the entrance was, but it was 1m wide, with a surviving length of 4.95m, and it had at least six steps leading down into a corridor (70cm wide) that terminated in a recess 87cm deep with a centrally-positioned 10cm diameter exhaust vent. Fragments of concrete with corrugated iron adhering to them would suggest that the entrance was capped. The south entrance was 45cm above the roof of the chamber and measured 5.85m long by 1m wide. This was capped by corrugated iron covered in concrete that sat on a recessed lip within the entrance walls, 5cm deep on each side. Eleven steps descended into a corridor (70cm wide) that terminated in a recess 87cm deep with a centrally-positioned 10cm-diameter exhaust vent. The floors in both corridors were of poured concrete with five 60cm by 46cm slabs set into them. A white painted number (45) was on a facing panel ofeach entrance.
The central chamber was identical to shelter F1 in terms of measurements and fittings. <1>