48"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 9.25"H] Compatible With Duct 12in + Product Details Size –

+ Product Details Size – 2" X 12" is the opening (vent hole) dimension - actual size is approx

+ Product Details Size – 16" x 28" or 28" x 16" is the size for the duct opening measurement only

Performance – High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

Ensure the fuse or circuit breaker has not tripped

48"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 9.25"H] Compatible With Duct 12in + Product Details Size –+ Product Details Size 48"W X 8"H is (for duct opening measurement only); actual front end outer dimensions are 49. 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