DESC: Handy snap-on closure system protects your skimmer from freeze damage and saves thousands of gallons of water a year. Simply replace your existing skimmer plate with the Aquador fuse plate and snap on the plastic lid. USA. How to fit your Aquador: Hayward-type Skimmers: Inside Dimen. 5-7/8"W x 5-1/2"H Outside Dimen. 8-1/4"W x 8"H Widemouth Skimmers: Inside Dimen. 11-1/2"W x 5-1/4"H Outside Dimen. 14-1/8"W x 7-3/4"H Doughboy Skimmers: Inside Dimen. 7-5/8"W x 5-5/8"H Outside Dimen. 11-1/8W x 7-5/8"H