Here's some Information About It:

Purpose: The primary purpose of a fan grill or finger guard is to enhance safety by preventing fingers, cables, or other foreign objects from coming into contact with the rotating blades of the fan.

Size: The dimensions of 9cm x 9cm refer to the overall size of the fan grill. It's essential to match the grill's size with the corresponding fan's size to ensure a proper fit.

Material: Fan grills are typically made from materials like metal. Metal grills provide sturdy protection.

Design: Fan grills often have a mesh or perforated design that allows airflow to pass through while providing a barrier against larger objects. Some grills may have additional features such as a logo or decorative elements.

Installation: Fan grills are usually designed for easy installation. They have mounting holes that align with the fan's screw holes, allowing the grill to be securely attached to the fan frame.

Compatibility: It's important to ensure compatibility between the fan grill and the cooling fan. Check the dimensions and mounting hole locations to make sure they match.