MTMTOOL Set of 10 Air Vents 2 1/9 Inch(53mm) Black Circular Soffit Vent Stainless Steel Round Mesh Hole Louver Vent for Kitchen,Bathroom,Cabinet,Wardrobe and Shoe Cabinet https://www.amazon.com/dp/B07TDDJZW8/ref=cm_sw_r_cp_api_i_o2cjFb3CM43QF

I have them wired to a switch and then direct to battery.