The Dometic LS100 & LS200 winter fridge vent cover set is designed to maintain optimal cooling performance for absorption fridges in cold weather. They are compatible with Dometic LS100 (top) and LS200 (bottom) ventilation grilles, typically found on single-door refrigerators. 

Key Specifications & Dimensions

This set includes two white plastic covers of different sizes: 

• Upper Cover (DS289059500): 370mm (W) x 130mm (H).
• Lower Cover (DS2890596006): 440mm (W) x 130mm (H).
• Note on Fit: The covers are intentionally smaller than the overall vent frame (approx. 479mm x 185mm) to leave a gap for essential air circulation and flue ventilation. 

When and Why to Use Them

• Temperature Threshold: Fit the covers when the outside temperature drops below 8°C to 10°C.
• Performance: In cold weather, absorption fridges can struggle with heat exchange. These covers prevent the system from cooling down too much, saving energy and ensuring efficient operation.
• Protection: Use them during vehicle storage or when washing the vehicle to prevent insects, debris, and water from entering the fridge's rear components.
• Removal: Crucially, they must be removed when the temperature rises above 8°C to prevent overheating. 

Installation

User reviews indicate that installation is generally straightforward: 

1. Alignment: Identify the correct cover for the top (smaller) and bottom (larger) vents.
2. Fitting: Locate the cover at the bottom of the grille, then secure the top.
3. Securing: Most models use integrated plastic clips or a quarter-turn screw to lock the cover in place.