We don't do enough long cooking to justify this for us in my mind. One more hole on the outside to leak, or have the vent eventually deteriorate. With residential fridge, no vents for that either.
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Dave
2017 Cardinal 3850RL Mocha Pearl full body paint
2016 F350 Lariat 4x4 FX4 SRW CC SB 6.7 Magnetic Metallic