Sliding Window Double Roller (789 Series) Product Parameter Product name Sliding Window Double Roller (789 Series) Model FZD-120R Brand E-BASO Material Aluminum alloy Design style European,Modern Surface Treatment Powder Coating Color Black/White/Silver/Customizable Application Door,Window Type Window Roller Service OEM & ODM This sliding window double roller is a core hardware accessory for 789 series aluminum sliding windows and balcony sliding glass doors. It adopts a