When sourcing Selcom-type doors, you must prioritize mechanical compatibility and safety parameters. Key specs include the opening width (700mm to 1200mm), the opening type (Center Opening or Side Opening), and the door operator voltage (usually 220V AC/DC). Ensure the VVVF (Variable Voltage Variable Frequency) drive is integrated for smooth motion control. Additionally, verify the panel material, typically 304 Stainless Steel or powder-coated carbon steel, with a thickness of at least 1.5mm for structural rigidity.