5" x 9" Stainless steel vent No Screen vents These round aluminum vents have

These round aluminum vents have a screen to keep insects out

Made in China

Unit features a two piece twist locking interchangeable screen vent cap

These round aluminum vents have louvers and a screen to keep insects out

5" x 9" Stainless steel vent No Screen vents These round aluminum vents have5" 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.