Date: 12/31/1969 Views: 3783
Date: 07/15/2009 Views: 4537
Date: 08/15/2004 Views: 3363
Date: 08/23/2023 Views: 704530
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.