Cover made of sheet steel to protect against dust deposits. For subsequent rear mounting using two threaded screws. Delivery includes 2 pieces. The Mirona Fit ZDP accessory cannot be combined with the Mirona Fit AWB/13000/26000 wall mount, the luminaire size 52000 or 40000 lm or the Mirona Fit-SPO version. 1 x order unit (equals 2 ZDP covers) required for the luminaire size 13,000 or 10,000 lm. 2 x order units (equal to 4 ZDP covers) required for luminaire sizes 26,000 or 20,000 lm.