Closeable Base Vents

ABS polymer vents allow fresh air to continuallyflow through your greenhouse. Mount avent near the base in each corner of greenhousefor natural ground-up cross ventilation.Close during cold weather to save heat.Vent measures 4 x 9.
*Buyenergyefficient.com is an authorized dealer of Solexx products.
* Accessories are considered as add-ons to greenhouse purchase. If purchased individually a $25 drop ship fee will be added.