SYM BANG D4020 Series Size:40x40x20mm (1.57"x1.57"x0.79") HOUSING Thermoplastic PBT, UL94V-0 IMPELLER Thermoplastic PBT, UL94V-0 BEARING Sleeve or Ball OPERATING TEMPERATURE Sleeve Bearing:- 10 C to + 70 C Ball Bearing:- 30 C to + 75 C INSULATION RESISTANCE 10 meg Ohms Min. @ 500 VDC (Between Frame and Terminal) DIELECTRIC STRENGTH 5 mA Max. at 500 VAC 60 Hz for 1 minute (Between Frame and Terminal) WEIGHT 40g (1.41 oz.) 40 0.5 32 0.3 DIMENSION Unit:mm 40 0.5 32 0.3 20 0.5 4x 3.5 AIR PERFO.