keep Pests Like Cabbage White Butterflies Off Your Cropsair Flows Effortlessly Through 1.35mm Meshfits Over 4.5m X 2.1m Raised Bedsthe Insect Net Has A 1.35mm X 1.35mm Mesh Keeping Out Pests Like Cabbage White Butterflies & Damaging Thrips To Keep Your Home-grown Crops Growing Strong & Producing Maximum Harvests Undamaged By Pests.build A Gro-frame Directly On To A Raised Bed Or Create A Separate Hinged Frame For Extra Easy Access, Then Add Your Choice Of Covering, Each Set Comes With Complete Instructions & Can Be Constructed Easily.