Add 5.3 US Gal (20 L) of extra storage to your existing 13.5 US Gal (51 L) cooler. Fully insulated and easy to install. Ideal, e.g., for separating your lunch from your catch or a seperate tackle box. Requires LinQ 13.5 US gal (51 L) Cooler (Single Latch) (269800943) for installation. LinQ 13.5 US Gal (51 L) Cooler LinQ 13.5 US Gal (51 L) Cooler