36"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 37.25"W x 9.25"H] Oval Stack Head + Product Details Perfect Fit Suitable for all AC 8in diameter 12125SDCLNGBX

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 28" or 28" x 10" duct opening (measured at the opening)

compatible with 8" duct | 1 in a pack - 2' pipe – 2 foot length – 30 gauge thick & made of thick & durable galvanized sheet metal

actual front end outer dimensions are approximately 32 5/8" width X 12 5/8" height -

+ Product Details Size & Compatibility – The 5" galvanized sheet metal round to oval elbow boot is compatible with duct 5"

36"W X 8"H [Duct Opening] Linear Aluminum Clip On Bar Return Air Grille [Outer Dimensions: 37.25"W x 9.25"H] Oval Stack Head + Product Details Perfect Fit Suitable for all AC 8in diameter 12125SDCLNGBX + Product Details Perfect Fit & Easy Sizing Designed for a 10" x 28" or 28" x 10" duct opening (measured at the opening) compatible with 8" duct 1 in a pack 2' pipe – 2 foot length – 30 gauge thick & made of thick & durable galvanized sheet metal