Aciq 74G36H Knockdown Supply Plenum 16.5x20x36 in

Product Description

The ACIQ 74G36H is a trim-to-fit knockdown supply plenum with a top panel, designed for residential HVAC installations on furnaces, air handlers, and evaporator coil assemblies. Fully assembled, it measures 16.5 inches wide by 20 inches deep by 36 inches tall, and it is sized for use with 17.5-inch-wide furnaces. The knockdown design collapses flat for easy transport to the job site. Once on site, a tech cuts the plenum to height using tin snips to match the supply opening of the connected equipment. Licensed HVAC technicians handle installation during new system installs or equipment changeouts.

This plenum suits standard residential forced-air systems where a field-fabricated or trim-to-fit supply plenum is needed between the furnace or air handler and the duct trunk. Its B-width sizing targets the common 17.5-inch furnace cabinet class. The knockdown configuration is practical for tight stairwells, attic hatches, and crawlspace access points where a pre-formed sheet metal plenum would not pass through. It ships and stores flat, reducing freight damage risk and storage footprint at the supply house or shop.

Key Features

• Fully assembled dimensions: 16.5 inches wide x 20 inches deep x 36 inches tall
• Designed for 17.5-inch-wide furnace cabinets (B width)
• Knockdown construction collapses flat for easy transport and jobsite access
• Four trimmable side panels and one trimmable top panel included
• Field-cut to finished height with tin snips — no power tools required
• Compatible with multiple brands of furnaces, air handlers, and evaporator coil cabinets

Compatibility

Designed for use with 17.5-inch-wide furnaces, air handlers, and evaporator coil assemblies from multiple manufacturers. Suitable as a trim-to-fit supply plenum for standard residential forced-air systems requiring a B-width plenum.

Installation Notes

Installation is performed by a licensed HVAC technician. Power down the furnace or air handler and shut off gas supply at the service valve before beginning plenum work. Use tin snips to trim the side and top panels to the required height to match the supply opening of the equipment. Seal all seams with UL-listed foil tape or duct mastic per local mechanical code requirements before reconnecting the supply trunk.

Technical Specifications

• Width: 16.5 inches
• Depth: 20 inches
• Height: 36 inches
• Cabinet Width Compatibility: 17.5 inches (B width)
• Panel Count: 4 trimmable side panels, 1 trimmable top panel

Standard Information

• Brand: ACIQ
• Manufacturer Part Number: 74G36H