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Here is an aluminum chassis for 50w amplifier BZ4923A
External size:(W)490mm *(H)230mm*(D)476mm(excluding the knobs and feet sizes
internal size:(w)285mm*(H)210mm*(D)446mm
thickness of front panel:20mm
thickness of rear panel ,top and bottom panels are 4mm
the size of heatsinks is 150mm*75mm*220mm
spare parts :a set of aluminum alloy feet ,one250v5A rocker type switch
