155x155mm Size Slim Black Wall Vent Grille Cover with Insect Screen Fly Mesh for up to 100 mm Vents 4 Fresh Air Flow Outlet or Inlet Duct to fit 3 or 4-inch Ventilation Louvre Outdoor External Grill

Does the job and good value

Does what it says

Needed to cover over some roof vents that the wasps took up home in.They came supplied with plastic mesh that was loose fitted as a fly screen which i knew wouldn't do the job. Replaced with metal mesh.The front of the grille is detachable but the pins holding them in are prone to snapping off, really easily.I was installing them under the eaves so i had to silicone them in position. Not an issue as i don't intend to access them on a regular basis.They are cheap as chips and do look sleek. If you accept their limitations i thought they were a reasonable buy when you compare the ridiculous prices some want to charge.

Bought for my campervan good quality and easy to fit