Grease Filter vs Baffle Filter
Mesh filters have multiple layers of mesh that air must pass through the grease sticks to the mesh.
Baffle filters force the air to move through a couple of 180 degree turns and in so doing deposits the grease in the bends.
Baffles retain their efficiency over long periods of time, and have a constant pressure loss that is probably lower than for mesh filters of the same size.
Mesh filters pick up dust, lint, and hair and their pressure loss increases over time until washed. Capture increases with added lint for a while until the flow drops and ventilation is compromised.
Baffles wash easily because the surfaces do not trap lint.
Mesh filters trap lint and washing doesn't always remove it without some aggressive action.
Bottom line: Mesh filters used with enough flow rate for the cooking environment can be effective, but mesh cleanliness is critical.