WEB Green and White Bag Register Vent Filter (12-Pack) in the Air Filter Accessories department at Lowes.com
Vent Register Filters – 12″ x 12″ (10 Filters) – ACFilter Indoor Home & Commercial Air Quality Products
VEVA Premium Air Vent Filters for Home & AC - 72"" x 16"" Electrostatic Media Kit with 120"" Installation Tape - Versatile Customizable Vent Filter Roll for Allergies (30+ Filters per Roll) - Amazon.com
Lisol Complete Air Vent Filters Kit- 98'' x 18'' Electrostatic Media With 157" of Installation Tape 36+ Filters per Roll for HVAC, AC & Heating Intake Registers & Grilles - Amazon.com
A Close Look At Vent Filters
GCGOODS Air Vent Filter Kit, 20" x 90" Electrostatic Media with Installation Tape (36+ Filters per Pack), Registers & Grilles Airduct Filters for HVAC, AC & Heating - Amazon.com
RELIABILT 4-in x 10-in Floor Register Net Trap Black Register Vent Filter (2-Pack) in the Air Filter Accessories department at Lowes.com