Dient to cover the exhaust vent from the outside. When the exhaust air is R from the side.

Stainless steel gill grille with fly screen to cover the vent opening of your dry separation toilet or composting toilet. Insects are prevented from entering and rain is effectively kept out by the slats.

With a gill grille of 63 mm you can perfectly cover the typical for the exhaust opening of about 40 mm.