These units have been tested and are in good working condition. Please note, the required voltage isn't sent to the units until a constant thermocouple reading of 87F (30.5C)up the entire lead. The fans will wiggle and attempt to spin until it surpasses 87F and receives that constant voltage. Equipment is tested and in good working condition.
Middle Atlantic QBP-2Overview

TheQBP-2fromMiddle Atlanticis a 1 RU blower panel with a pair of custom-designed blowers that provide cooling to equipment stored in credenzas and small rack systems. It features a UL-listed power supply, 9’ power cord, and a black powder-coat finish.

The fans switch on or off and speed up depending on the temperature inside the rack, thereby ensuring low power consumption. In addition, the blower provides high static pressure to ensure steady airflow, even in cramped racks. The blower panel offers a displacement of 100 CFM with minimal noise (32 dB), allowing for quiet operation, even at high speeds.

Custom-designed blowers provide cooling to the A/V equipment stored in credenzas and small rack systemsBlower provides high static pressure to ensure steady airflow even in cramped racksProportional thermostatic control only runs when neededUnit operates at only 32 dB while moving 100 CFMBlack powder-coat finish