With a widow adjustor installed, the knurled knob could make your outswing window open and close...
Door Closer & Hardware Manufacturer | D&D
Based in Taiwan, D&D BUILDERS HARDWARE CO., since 2002, is a door closer & hardware manufacturer. Main product, including Window Operator, door hinge, door handle, door lock and cylinder, door closer, glass hardware, door accessory and so forth.
TÜV Rheinland and UL certified door closer and hardware production from designing, molding, plastic injection, stamping, forging, die casting to CNC machining, has over 20 years with plentiful experiences in handling various architectural hardware. SLIDEback sliding door closer, the patented connecting design provides various applications for different sliding doors, and the connection and separation switching bar design allow having a door with or without auto-closed function.
D&D has been offering customers high-quality door closer and hardware, both with advanced technology and 15 years of experience, D&D ensures each customer's demands are met.