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"New Open Box [PNXXXX-NOB]Previously opened boxes that have been reboxed. NOB-Stock goods have the same 1-year warranty as all other Kleinn products.MODEL JL2202018-2020 Jeep Wrangler JLU (4-Door Only)Add the Model JL220 Dual Train Horn to let them know you’re coming over the top. Kit includes a custom designed direct fit mounting bracket and model 220 dual train horn that produces an earth shaking 154.2 decibels. Kit is 100% bolt-on and requires no drilling. The JL220 is designed to work with the JL-JK-OBA* but will work with any onboard air system that does not interfere with the horn mounting location and has minimum 100 PSI and 1-gallon air tank.* JL-JK-OBA mounts on JLU and JKU 4-Door models onlyInstallation Instructions"
<https://kleinn.com/products/jeep-jlu-wrangler-black-dual-air-horn-add-on-kit-1>