The 840836 is a 'QUICK FIT' fuse cover specifically designed for standard 1/4" x 1-1/4" fuses. It is constructed from a flexible PVC material (RMS-55) in a transparent blue color, which allows for easy visual inspection of the fuse's status without removal. The cover features key reference dimensions including a height (H1) of 1/2 inch (12.7 mm) and a length (L1) of 0.32 inches (8.0 mm). Its 'QUICK FIT' design ensures simple installation and removal, making it an ideal solution for insulating and protecting fuses in various electronic assemblies from environmental factors and accidental contact.