Service Weight Gaskets:
• Available in three sizes, these gaskets are manufactured from EPDM material to withstand harsh sunlight and greenhouse environments. 1.5" and 2" Service Gaskets each require a 3" hole. 4" Service Gasket requires a 5" hole.
2" Mushroom Vent Cap:
• Designed for maximum venting efficiency to compensate for positive or negative pressure buildup in a tank. All four sides meshed to keep insects and debris out of the tank.