The Derale High Output Dual 11 inch RAD Fan and Aluminum Shroud Powerpack delivers dual-fan airflow in a shroud roughly the size of a single-fan unit, making it a strong primary cooling package. It uses two 11 inch high output RAD fans with patented skewed, ultra-quiet blades and IP-68 waterproof and dustproof motors. The raw aluminum shroud includes stator flow directors and can be left bare, polished, painted, or anodized. Adjustable mounting brackets and hardware are included.
Specifications:
- Fans: Two 11" high output RAD electric fans
- Airflow: 1875 CFM per fan, 3750 CFM total
- Amp draw: 18.7 amps per fan
- Configuration: Puller (engine side) only
- Shroud: Raw aluminum with stator flow directors
- Overall dimensions (W x H x D): 23-3/4" x 19-3/4" x 4"
- Motors: IP-68 waterproof and dustproof
- Includes: Adjustable mounting brackets and complete mounting hardware
- Part number: 16835
FAQ
How much air does the Derale 16835 powerpack move?
Each 11 inch fan moves 1875 CFM, for 3750 CFM total.
Is it a puller or pusher?
It is a puller, for engine-side (behind the radiator) applications only.
What are its dimensions?
The assembly measures 23-3/4 inches wide by 19-3/4 inches tall, with about a 4 inch overall depth.
What is included?
It comes with the dual-fan aluminum shroud assembly, adjustable mounting brackets, and complete mounting hardware.

