Plastic return air grill for return air flow with your A/C vents.

5" ×11" return air grill with filter. Easy to change with  drop down face plate.

Overall size approximately: 13 7/8" x 7 3/4" See pictures.

Foam Filter fits A/C Return Air Grill Plastic Vent  Ebay item: 235449023766
US Shipping $7.95 for the first one.  Add $3.60 for each additional one.

Please let me know if you have any questions.
Thank you,
Babette