ActronAir Fan Twin Deck 9x7 1HP ECM ELGEE (Flipped Module) is the current replacement for the discontinued 2520-313 assembly, updated with a flipped motor module configuration to accommodate changes in indoor unit housing geometry introduced in later AIRES and Advance R32 production runs. The flipped module orientation is not interchangeable with the 2520-343 standard assembly -- confirm the correct module orientation against the unit service documentation before installation to avoid mechanical interference. Isolate power at mains before replacement -- live work on fan assemblies is dangerous and must only be performed by a qualified technician.