Overview Similar Products –> Product Description B177-0011 Rubber Mounting Rings Used on Fasco D1190, AO Smith 658 Rek-O-Kut models B-12H, B-16H, K-33, K-33H, K-34H, L-34, L-38, N-33H, N-34H, NL-33H, S-34H, the Radine L34, the Empire models 208, 298, 398, 498, 598 I-III and 698, and they are also suitable for use in the Echoplex EP-2. These fit a 3/4″ hole, and do not fit the Rek-O-Kut Rondine 2 or R-34H, which take a smaller grommet. MOST REQUIRE 3 PER APPLICATION!!! Product Videos Custom Field Product Reviews