For increased air circulation in your greenhouse, Rion recommends one Roof Window for every 4 feet. Compatible with Rion 40 series GH44, GH46, GH48, GH4-10, and GH4-12 only. Includes vent and manual adjusting lever.
To ensure even temperature in your greenhouse day or night, try Rion's Automatic Roof Window Opener.
This item has been discontinued. We apologize for any inconvenience.
Last Updated: 07/30/2016 04:38 AM - ID:1816