18"w X 12"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return Filter Grille 10"w X 4"h Is The

10"w X 4"h Is The Size For The Duct Opening Measurement Only

Actual Filter Size – 15 3/4"w x 15 3/4" x 1"

this thermostat guard is the perfect solution for safeguarding your temperature controls

With a 5" diameter for the duct opening measurement

The total outer size of this grille is the listed size plus 1

18"w X 12"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return Filter Grille 10"w X 4"h Is The+ Product Details Size 18"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are 19" Width X 13" Height Design special "V" shaped louvers ensure 100% view block while ensuring easy un restricted air flow Installation Location Wall or door mount door thickness up to 32mm anodised finish smooth & beautiful High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving