Date: 11/29/1999 Views: 7141
Date: 08/12/2009 Views: 7897
Date: 07/19/2007 Views: 4427
Date: 08/23/2023 Views: 720690
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.