https://amzn.to/4jX1U1w 5-Pack 4" x 10" Byewire Floor Register Vent Mesh Filters Net Trap on sale for $17.99 - $0.90 (5% off when you 'clip' the coupon on the product page) - $9 (50% off when you apply promo code 509LIEKV on the checkout page) = $8.09. Shipping is free w/ Prime or on $35+ orders.