Safeguard One Way Squirrel Excluder 53110 Dimensions: 12"L x 5"W x 5"H Designed and tested by professional trappers. Mesh size is .5" x 1" One way, spring loaded door -- galvanized 16 gauge mesh. This method of exclusion is preferred when trapping isn't an option Made in America - Orders usually ship in 1-2 days. Orders placed over the weekend may take longer.