44"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 45.25"W x 9.25"H] Sheet Metal + Product Details Size –

+ Product Details Size – Stick-on collar is 16" and it is compatible with duct 16"

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height

Durable Material - 30 Gauge Thick & Made of Thick & Durable Galvanized Sheet Metal - Used For HVAC System Duct Work In Any Building or Home

+ Product Details Size - 36"w X 32"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 18" Or 18" x 34" duct opening (measured at the opening)

44"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 45.25"W x 9.25"H] Sheet Metal + Product Details Size –+ Product Details Size 44"W X 8"H is (for duct opening measurement only); actual front end outer dimensions are 45. 25" Width X 9. 25" Height. Design Designed for concealed, flush placement on your wall with a 3 8 inch space between louvers, this linear grille comes with an installation frame and clips for easy hook in assembly, ensuring a refined and seamless look. High Quality Aluminum The premium durable aluminum will never rust and it will never