Aluminum Mini Louver

I needed vents for my observation hive. I would have preferred something a bit smaller made of brass, but this is the best I could find. Keeping my fingers crossed, I ordered these up. After assembly of the hive, I found that they actually look pretty good and they do provide the ventilation required for the hive. The louver spacing is also small enough to prevent unintended escapes. A 1" wood auger makes a hole perfect for proper fit. They are well made and the price is right.

I used these to provide minimal positive air flow behind the new exterior siding on the house. The siding is attached to 3/4" battens which provide a 3/4" air space between the siding and the sheathing. The battens also reduce thermal bridging between the house and the siding and should reduce heating and cooling costs. Although I used cement siding and wasn't concerned about trapped moisture between the siding and sheathing, the air vents also minimize possible mold and rot due to trapped moisture when installing wood siding.