The Hardee HD300 Floor Spring is a heavy-duty solution designed for doors weighing up to 100 kg. It offers smooth, controlled door operation with adjustable spring strength and two-speed control for customized closing and latching. The floor spring is compatible with doors up to 1,000 mm wide and 12 mm thick, featuring a 90° hold-open function. Made from durable stainless steel, it’s ideal for commercial and residential applications, ensuring long-lasting performance with over 500,000 cycle tests. Available in various finishes and sizes to suit specific design needs.