No tools required, just slide the ventilation mesh screen onto the back of the floor conditioner and insert it into the vent. [ MATERIAL] The floor vent window is made of ABS and fabric, sturdy and durable. Stretchable and unbreakable, the floor filter catches small items while keeping the room well-ventilated. They're also easy to clean; the nets are small so small items don't get lost. Our ventilation mesh traps are designed for floor registers measuring 4 x10 inches. It helps catch any debris such as rings, coins, earrings, or keys that may fall from the vent cover and disappear to keep your ductwork clean. Please note:There is slight color difference between the actual product and it does not affect the use. Colour:Black Material:Polyester mesh+PVC Size:4x10In Package Contents: 6 * Floor Register Trap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.