Is a pollen screen the same as a window filter?

Short answer

“Pollen screen” is a product name, not a technology. Different materials can be sold under the same name. What matters is whether the material has a layer fine enough to hold back pollen grains.

How can you tell them apart?

• Layers: A window filter is layered, with a nanofiber membrane in the middle.
• Texture: In tight mesh you can see the threads; in a membrane you cannot make out the pores.
• Description: The seller should state clearly what the filter holds back.