Seachoice - In-line Bilge Blower - 4" - 41861. Spark proof. Blower meets or exceeds the following standards: ABYCH H-2, USCG 33 CFR Sections 183.410 and 183.425, ISO 8846 and 909, SAE J1171. Housing is molded, tough corrosion-proof ABS plastic.. Rugged built-in mounting brackets for easy installation. Molded tabs on all hose flanges provide positive hose connections. Ignition protected. Spark proof. 18 gauge marine-grade tinned wire.. Features:. 4" Intake. 4" exhaust with remote bracket. 5-1/4" length. 4-7/8" mounted height. CFM 240 air movement. Ignition protected. 12V DC. Use 4 Amp fuse