Large White External Wall Vent Square Slim Grille with Insect Screen Fly Mesh to Cover up to 6 inch Holes for Fresh Air Flow Outlet or Inlet Duct Ventilation Louvre Cover Outdoor External Grill

This product is not good quality at all, the vent barely has screw holes-they are tiny! Do not recommend

Cheap and does the job.

I guess you have to be very careful when you are measuring the square that the vent needs to fit. Sadly this one was too big

did the job I purchased it for, I did however order a bigger vent then what was previously fitted so this isn't fully attached to the wall yet, I'll do it when it stops raining.

Excellent