. Ultra Thin Designer Round 400mm Shower Head and; Ceiling Arm Summary This Ultra thin designer shower head is a must have for any contemporary bathroom. The 400mm round shower head comes complete with matching ceiling arm. Features 400mm. diameter ultra slim designer round head Chrome finish Solid brass ceiling arm chrome plated Comes complete with swivel to allow shower head adjustment Minimum pressure 1.5 bar Also suitable for use with wall arm Easy clean rubber inserts on head.