Date: 12/31/1969 Views: 6880
Date: 02/07/2006 Views: 5246
Date: 07/06/2004 Views: 5391
Date: 08/23/2023 Views: 721630
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.