HydroLogic® PreEvolution™ Sediment Filter brand_grower-select We offer nine ventilation systems

We offer nine ventilation systems with different greenhouse fans and shutters based on the amount of space you need to circulate air

Clips to flood tables for air flow under foliage

These high quality thermostats are perfect for any situation where harsh conditions may damage less durable equipment

Easy to store and transport

Finger jointed cedar enables the use of beautiful Western Red Cedar siding

HydroLogic® PreEvolution™ Sediment Filter brand_grower-select We offer nine ventilation systemsThe pleated sediment filters are cleaned by rinsing regularly with a hose. The filters reduces silt, rust, dirt, sand and sediment. Change filters every 6 months. PreEvolution Sediment Filter Features: For PreEvolution Systems Reduces silt, rust, dirt, sand, and sediment Clean regularly and change bi annually Dimensions: 10 in. x 4. 5 in.