3 Shelf units with 18mm chipboard. Bays comprise 4 uprights, 3 shelf levels with channel beams, beam ties as required, feet & assembly instructions. Shelf Load. 1800 x 900 mm Max Load per Shelf 210kg. 2400 x 600 mm Max Load per Shelf 445kg. 2400 x 900 mm Max Load per Shelf 210kg.