Description These 45mm plastic insulation washers are for securely holding rigid foam board in place. Whether you're working on a construction project or a DIY home insulation task, these washers provide a reliable support system that ensures the foam panels remain stable and effective in thermal performance. Features -Color:White -Material:Plastic -Size:4.50X4.50X0.50 cm/1.77X1.77X0.20in -Reliable material: made from durable plastic, these washers are ensuring longlasting performance without deformation over time -Secure fastening: the design allows for a firm grip on screws, preventing loosening or detachment, which provides a stable support structure for various applications -Versatile use: ideal for a range of settings, including construction, renovations, and furniture manufacturing, these washers can meet diverse fastening needs -Quality assurance: manufactured under strict quality , this product standards and reliability, catering to all user requirements -Fit:White Plastic Washers are suitable for fixing and installing foam boards, rubber boards and other decorative materials