Base type: PX43t. Mounting type (base): HS1 ( Px43t). Lamp type: HS1. SYM Symphony 50 4T 2009. SYM Symphony 50 4T 2010. SYM Symphony 50 SR 4T 2011. SYM Symphony 50 4T 2011. SYM Symphony 50 SR 4T 2012.
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