The Original Square Catch Covers are most often used to retrofit ice houses that have homemade plywood covers in them already, or can be used if you prefer to cut your holes in with a circle saw. They are just as tough as the Original Round Catch Covers and are made in Minnesota with a no-questions lifetime guarantee.
Hole Cover Dimensions:
Rough floor cut - 12 3/4" x 12 3/4"
Top diameter - 16" x 16'
Flange depth - 1 3/8"