Sep 01, 2011 · High Mast Pole Perforated Aluminum Skirt. Isometric Views. 09/01/10. E 807-LTHM-03. Lighting High Mast Pole Concrete Pad. External Winch Detail & Section. 09/01/10. E 807-LTHM-04. Lighting High Mast Pole Concrete Pad with Retaining Wall.