These Fit Where Other Fans Won'tPuller or pusher designSingle or dual unitGain HP by replacing stock belt fan2000 fan RPM at 13.5 VDCSealed-circuit motor for max flow12" fan, each with ten 21° bladesBracket or through-core mountingLightweight 1-piece nylon shroud with full-contact rubber sealWith or without adjustable thermostat and AC relayInstructions with wiring diagrams in English, Spanish, and French