12" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w6h6 These Supply Diffusers with integral

These Supply Diffusers with integral round necks are recommended for heating

+ Product Details Universal Set – This universal line cover set contains 11 essential pieces for your HVAC system

Cubic core eggcrate design has the highest rate of airflow efficiency

actual front end outer dimensions are approximately 12 5/8" width X 22 5/8" height

12" X 30" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIRFLOW - LINEAR BAR GRILLES w6h6 These Supply Diffusers with integral+ Product Details Size 12"w X 30"h is the size for the duct opening measurement only, [Outer Dimensions: 14. 5"w X 32. 5"h] Actual Filter Size 11 3 4"w x 29 3 4" x 1" High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Location Sidewall and ceiling. Design Heavier gauge than needed,