Setup: 1. Safety First: Before attempting any installation, ensure the power supply to the wellglass fitting is completely switched off at the mains. 2. Remove Old Diffuser: Carefully unclip or unscrew the existing diffuser from your Eterna wellglass fitting. Refer to your fixture's manual if unsure. 3. Install New Diffuser: Align the Eterna WELLDIFF replacement shade with the fitting's designated slots or clips. Gently push or twist until it securely clicks into place. Ensure it is firmly seated to prevent moisture ingress (if applicable to your fixture's IP rating). Compatibility: This diffuser is exclusively designed for Eterna branded wellglass fittings. Specifically, it is a replacement for models like the "Eterna branded corner light. Stainless steel twin wall light." It is not guaranteed to fit wellglass fittings from other manufacturers or different Eterna fixture types. Care: To clean the diffuser, use a soft, damp cloth with mild soap and water. Gently wipe the surface to remove dust or grime. Avoid using abrasive cleaners, harsh chemicals, or solvents, as these can scratch or damage the polycarbonate material, leading to reduced light clarity or structural degradation.