Triangle Tube PSRKIT13 Blower Kit w/Gasket (SOLO 175/250)This blower creates a negative draw through the negative gas valve to allow for burner modulation. As well as, exhausting the combustion by-products safely away from the inhabitants of the building being heated by the Solo heating system. Parts4heating have these blowers in stock and can ship almost anytime. Please call for assistance 800-536-1582 and we will be there to help.