Mcdaniel Metals MCDA-ACG1625-3 Furnace Filter Base 16x25

Product Description

The MCDANIEL METALS MCDA-ACG1625-3 is a gas furnace filter base designed to house standard 16-inch by 25-inch filters in either 1-inch or 2-inch depths. This sheet metal filter base mounts at the return-air inlet of a residential or light-commercial gas furnace, providing a secure, properly sized filter rack that keeps airflow aligned and filtration consistent. The unit measures 3.75 inches tall by 17.375 inches wide by 28.5 inches deep and weighs 12 pounds, making it a substantial, rigid housing built for lasting field service. HVAC technicians install this base during new equipment setup or when replacing a damaged or undersized filter cabinet.

This filter base is suited for residential gas furnace installations where a dedicated, fixed filter housing is preferred over a slip-in rack. It accommodates the widely used 16-inch by 25-inch filter footprint and accepts both 1-inch and 2-inch thick filters, giving service technicians flexibility to match the filtration level required by the system or customer preference. The fixed base design keeps the filter fully seated and reduces the risk of air bypass around the media, which is especially important in higher-efficiency systems where unfiltered air can foul heat exchangers and coils.

Key Features

• Accepts standard 16-inch by 25-inch filters in 1-inch or 2-inch thickness
• Rigid sheet metal construction at 12 pounds for durable, long-term installation
• Overall dimensions of 3.75 inches tall by 17.375 inches wide by 28.5 inches deep
• Fixed base design reduces air bypass around filter media
• Compatible with both 1-inch and 2-inch filter depths without additional adapters

Compatibility

Designed as an OEM-style replacement or new-install filter base for residential gas furnace applications using a 16-inch by 25-inch filter size.

Installation Notes

Installation is typically performed by a licensed HVAC technician. Power down the furnace and set the thermostat to the off position before beginning any work on the filter cabinet or air-handler section. Confirm that the filter base dimensions match the available return-air opening and that the duct connection is properly sealed after installation to prevent air bypass. Follow local mechanical codes for sheet metal connections and fastener requirements.

Technical Specifications

• Filter Size: 16 inches x 25 inches
• Compatible Filter Thickness: 1 inch or 2 inches
• Overall Height: 3.75 inches
• Overall Width: 17.375 inches
• Overall Depth: 28.5 inches
• Weight: 12 pounds

Standard Information

• Brand: MCDANIEL METALS
• Manufacturer Part Number: MCDA-ACG1625-3