28W 2D White/Prismatic IP65 Bulkhead Fitting 28W 2D Polycarbonate Wall/Ceiling Bulkhead Fitting AA28/WP/HF £0.00 Out of stock. Multi-purpose range of circular bulkhead fittings for both internal and external installations. All polycarbonate construction. Body options of black or white base with deffuser options of clear prismatic or opal. Supplied c/w lamp.