8"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 9.25"W x 7.25"H] Flat Elbow Transition˚ + Product Details Size -

+ Product Details Size - 40"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 29 3/4"w x 33 3/4" x 1"

actual front end outer dimensions are approximately 18 5/8" width X 24 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 30" OR 30" x 20" duct opening (measured at the opening)

INSTRUCTIONS - Use this dryer duct end cap with duct tape to terminate old ductwork runs in a flexible duct or round metal duct

8"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 9.25"W x 7.25"H] Flat Elbow Transition˚ + Product Details Size -+ Product Details Size 8"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 9. 25" Width X 7. 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