hvac plenum ceiling box 6x

6 x 6 Ceiling Box w/ 6 Round Collar - Connects Register Vent and Diffuser HVAC

Ceiling Boxes are the perfect fitting to use when you need to put a register in the ceiling to supply air into your room. All Ceiling Boxes are manufactured from the highest of quality galvanized steel. Sizes listed are the box opening first and second... more

Texas Buildmart BUILDMART - 36" 3 Slot Plenum Linear Slot Plenum - Triple Slot, Premium Insulated Plenum Box/ | Wayfair 0072

Galvanized sheet metal plenum box with black foam insulation, ideal for Texas Buildmart 12" linear slot diffuser. This air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air. Connects to a 9" flexible... more

Texas Buildmart BUILDMART - 18x10 Modern AC Vent Cover - Standard Linear Slot Diffuser - Register Grille/ | Wayfair 0201

Galvanized sheet metal plenum box with black foam insulation, ideal for Texas Buildmart 12" linear slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air. Connects to a 6" flexible... more

6 x 6 Ceiling Box w/ 6 Round Collar - Connects Register Vent and Diffuser HVAC

Ceiling Boxes are the perfect fitting to use when you need to put a register in the ceiling to supply air into your room. All Ceiling Boxes are manufactured from the highest of quality galvanized steel. Sizes listed are the box opening first and second... more

8 x 8 Ceiling Box w/ 6 Round Collar - Connects Register Vent and Diffuser HVAC

Ceiling Boxes are the perfect fitting to use when you need to put a register in the ceiling to supply air into your room. All Ceiling Boxes are manufactured from the highest of quality galvanized steel. Sizes listed are the box opening first and second... more

Duct Outlet 12 x 12 Ceiling Box w/ 10 Round Collar - Connects Register Vent and Diffuser HVAC

Ceiling Boxes are the perfect fitting to use when you need to put a register in the ceiling to supply air into your room. They have a plaster ground flange installed for easy finishing to your plaster or drywall. more

Duct Outlet 12 x 12 Ceiling Box w/ 12 Round Collar - Connects Register Vent and Diffuser HVAC

Ceiling Boxes are the perfect fitting to use when you need to put a register in the ceiling to supply air into your room. They have a plaster ground flange installed for easy finishing to your plaster or drywall. more

BUILDMART - 48 Plenum Box for [48 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling

Galvanized 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... more

QuietCool RM WHF-4.0-PL Roof Mount Whole House Fan - For Flat Roof Homes with No Attic - Up to 3543 CFM - As low as 219 Watts - Three Speed - Included Damper Grille Plenum Box and Wireless RF Contro

QuietCool offers whole house fans for every type of home imaginable. For flat roof homes or sloped roof homes that have cathedral ceilings our Roof Mount Whole House Fan line is the perfect solution for improved comfort ventilation and savings. Say... more