Date: 11/29/2010 Views: 10476
Date: 10/08/2009 Views: 5991
Date: 12/28/2009 Views: 8072
Date: 08/23/2023 Views: 821003
Old 1/4 in (6.4 mm) vent on the top. Totally inadequate for the job. New 3/8 in (9.5 mm) vent on the bottom.