WITTEN AUTOMATIC OPEN/CLOSE FOUNDATION VENT BLACK
- Automatically opens at 70o F- closes at 40o F..
- High density thermo-plastic construction with stainless steel and corrosion resistant metal parts..
- Heavy duty aluminum mesh screen in front and back..
- Fits 8"H x 16"L opening..
- 65 square inches of ventilation..
- Energy saver and helps control moisture build up under the home..
- Set screws included for installing..
- Limited Lifetime Warranty.
- Made in the USA..
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