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The MCDANIEL METALS MCDA-BLE2-2020-2 is a single-filter HVAC filter base from the ACE Series Baseline 2.0 line, designed for upflow electric air handler installations. It accepts a nominal 20 x 20 inch, 1-inch-thick filter media and features a spring-hinged, gasketed door that creates a tight seal to minimize air bypass. Rounded corners reduce handling hazards during installation and service. The through-duct configuration and insulated housing make this filter base a clean, code-friendly fit in residential and light commercial upflow systems. It is installed by HVAC technicians and sheet metal tradespeople working on electric forced-air systems.
This filter base is intended for upflow electric HVAC configurations where a dedicated filter section is needed between the return air duct and the air handler cabinet. The ACE Series is purpose-built for installations that require a secure, gasketed filter housing rather than a simple slot-style rack. The unit accommodates a single 20 x 20 nominal filter with an actual media size of 19-9/16 x 19-9/16 inches. Its insulated housing helps prevent condensation on the exterior and reduces thermal loss at the filter section, which is particularly relevant in unconditioned mechanical spaces.
Designed for upflow electric HVAC air handler installations requiring a nominal 20 x 20 x 1 inch filter base. Verify cabinet opening dimensions against the housing outside dimensions before installation.
Installation is typically performed by a licensed HVAC technician or qualified sheet metal installer. Shut down and de-energize the air handler at the disconnect and thermostat before beginning work. Confirm the rough opening accommodates the housing outside dimensions of 22 inches in length, 21-3/8 inches in width, and 2-3/4 inches in height. Seal all duct connections to the filter base with mastic or approved metal tape per applicable mechanical codes to maintain system static pressure and prevent bypass.
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