Durablow 220 CFM Air-In Stainless Steel Crawl Space Vent Fan, Dual Fans with Dehumidistat & Thermostat, Foundation Vent, Radon Mitigation, for Crawl space, Basement (Stainless steel 430, M2D-S430-N) SUS430+Dual Fan+Dehumidistat Air-In is up for auction in Tools & Home Improvement. The current bid is $4.50, 95% below the $83.95 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.