... shutter,slat width33mmRaw material:Use the high hardness aluminum alloy section of 6063A and 6061,Webster hardness≥10HW ... has holes of the size 30*5mm at he hook,AJ33B has holes of the size 60*6mm at ... the hook; 2) When the sheet are compeletely closed,it ... Suit for window,veranda,aisle,suitable width ≤2meters; AJ33 Aluminum roller shutter/roller door,rolling shutter