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980 si nfa (square inches of net free ventilation area)
RWP-100 4"4PK
RWT-100 4" 4PK
500 si nfa (square inches of net free ventilation area)
5" x 9" Stainless steel vent Screened vents 980 si nfa (square inches5" x 9" Stainless steel vent 331410 These flush mount stainless steel vents are held in place by #6 screws. They are great for stairway, deck, or patio downlights. They do not have insect screens. The louvers are spaced closely enough to keep out most insects. Insect screen could be easily added. 4. 05 si nfa (square inches of net free ventilation area). Made in the USA. Orders placed by 3 pm MT will ship by the next business day, inventory permitting.