Classic design stainless steel cooler provides an attractive and durable product. Hermetically sealed refrigeration system provides chilled water to satisfy thirst. Mechanical push-button bubbler activation continues to provide water when electrical service is interrupted. Stainless steel construction withstands abusive environments and resists stains. Tamper-resistant fasteners help protect against vandalism. Vandal-resistant bubblers feature chrome plated integral hood guard to prevent contamination from other users, airborne deposits and tampering. Filter systems certified to NSF 42 and 53 for lead, Class 1 particulate, chlorine, taste and odor reduction. Rated for indoor and outdoor use. Frost-resistant models extend outdoor usage season.