Filter Fan ready for installation, including drilling template, filter mat and assembly hardware. No tools required to mount Rittal TopTherm Filter Fans. Easy and tool-less reversal of the airflow direction by simply rotating the fan motor. Diagonal fan technology ensures greater pressure stability, constant airflow even with contaminated filter mat and flow optimized air-routing.Simple and tool-less filter mat replacement. Ratings: IP 56 (When using a Type 3R Fan Shroud), NEMA 12 (Standard), NEMA 4/4X (When using a Type 3R Fan Shroud), 115 Volt, Hole size 54 (standard). 147 CFM. Size 10". Air displacement, unimpeded air flow - 135/147 cfm. Air displacement with outlet filter - 1 x SK 3240.200: 108/120 cfm; 2 x SK 3240.200: 119/135 cfm; 1 x SK 3243.200: 119/135 cfm. Diagonal fan - self-starting shaded pole motor. Rated current - 0.52 A/0.48 A. Power consumption - 40 W/42 W. Noise level - 54/56 dB (A). -22 degree F to 131 degree F Operating temperature. Light gray color. NEMA / IP Rating - IP 54 (NEMA 12) standard; IP 55 with additional fine filter mat; IP 56 (NEMA 4/4X) with additional hose-proof hood. Measures 10.04" width by 10.04" height by 5.20" depth. Certifications and approvals: CCC CCC 2003010401038566, CE CE 3527009, cUR E76083, UR E76083. Reference: ampere(A), cubic centimeter(cm3), watt(W), volt(V), hertz(Hz), British thermal unit(BTU), cubic foot per minute(cfm).