The Middle Atlantic ERK-4FT-285CFM Integrated Fan Top is designed to optimize cooling for your rack systems. Pre-assembled for convenience, this fan top features three powerful 4-1/2in fans with fan guards to ensure efficient airflow and equipment protection. It is built with durable steel construction and finished in sleek black to match your rack's aesthetics. Compatible with WMRK, ERK (35 space and higher), ERK-KD (all heights), and SCRK racks, the fan top is an ideal solution for enhancing ventilation and extending the life of your equipment. Save time with this pre-assembled fan top, which ships fully assembled and ready for installation.The Middle Atlantic ERK-4FT-285CFM Integrated Fan Top is designed to optimize cooling for your rack systems. Pre-assembled for convenience, this fan top features three powerful 4-1/2in fans with fan guards to ensure efficient airflow and equipment protection. It is built with durable steel construction and finished in sleek black to match your rack's aesthetics. Compatible with WMRK, ERK (35 space and higher), ERK-KD (all heights), and SCRK racks, the fan top is an ideal solution for enhancing ventilation and extending the life of your equipment. Save time with this pre-assembled fan top, which ships fully assembled and ready for installation.