Fit/Function6.9.6.1 Sampling size: 5pcs/SKU6.9.6.2 Install on the wall to check: 2pcs/SKU6.9.6.3 Please install step by step according the instruction sheet6.9.6.4 Fit/Function checklist as below, detailed please refer 7.1 Inspection criteria for each collection & 7.6 “EBR and PPAP Form”