The No. 1-selling fish-house hole cover – because it’s practically designed and it lasts. Made of a blend of cold-weather plastics that won’t crack or warp in even the most-extreme conditions. An always-snug fit keeps snow, dust and road salt out of your fish house when trailering it, too. Fits a 12-3/4" rough floor cut. Lifetime guarantee. Made in USA. Per each. Inside dimensions: 12" diameter. Rough floor cut: 12-3/4" diameter.