TN 1045959 Panel Air Filter for Tennant Sweepers. An upgraded version of the standard cellulose pleated box filter. Our spun bond poly panel air filters are water-washable and are made to outlast standard paper filters. Synthetic filters can be used in moist or wet environments where paper filters become damp and self destruct. Make sure to allow synthetic filters to fully dry before re-installation to prevent clogging. Fit models S10, 37B, 42, 186, 215, and Models 235 (Models 235 with serial numbers below 1391 - for models with serial numbers above 1391, use TN 87341). Measures 16 x 26 x 2.7" Replaces Tennant 1045949AM. Our Part Number TN 1045949, TN 1045949AM, TN 1045949S