BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and CoolingGalvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 48" lineal slot diffuser. This air distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air. Connects to: 8" flexible duct in oval shape. Can be used and brazed to a 4" or 6" wood stud. If you do not have this size flex, you can use a reducer to modify the size. Professional HVAC Installer is Recommended. Ideal for Texas

Neck: 70 15/16" x 1 5/8" - Face: 72 5/16" x 3 1/8"

Texas Buildmart offers Mud In Air Vent Covers also known as Drywall Mud-in White Air Vents

60" Linear Slot Diffuser - 2 Slot - Double Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings

CFM 657 ft3/min - Effective Velocity 9

Neck: 11 13/16" x 9 9/16" - Face: 13 15/16" x 11 11/16"

Texas Buildmart offers Modern AC Vent Covers also known as High Quality Standard Linear Slot Diffusers

Neck: 17 3/4" x 7 7/8" - Face: 19 3/4" x 9 7/8"

CFM: 282 ft3/min - Effective Velocity: 9

ASIN: B085VBNSJ3

12'' X 4 3/4" Linear Slot Plenum Box - For Triple Slot (3 Slot) Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings

ASIN: B091PT19BQ

Can be used and brazed to a 4" or 6" wood stud