The 15 Gallon Stainless Steel Reservoir with Micron Filter from Buyers Products is made of high-quality 304 stainless steel with welded-on carbon steel mounting brackets. Its sleek, polished appearance will stand up to salt and weather for long-lasting use, making it great for winter spreader applications. The reservoir has several features for optimal fluid operation, including: – a quarter-turn chrome filler breather with a wire basket strainer – a sight fluid level and temperature gauge – an interior baffle between suction and discharge to aid in fluid cooling – a magnetic drain plug to aid in prevention of metallic particle contamination It comes pre-drilled for an included tank-mounted HFA5S series return filter. Choose from a 10 micron or 25 micron filter (shipped separately).