These are made from extremely hard and strong non-toxic polycarbonate plastic. This material is considered food safe and is made from non-petroleum based material. Each is coated with a durable spray primer which is similar to bondo body filler used on cars. The color is then added along with a coat of clear UV protection.
Each is 4" in diameter and 1/8" thick. Choose from 3 different size holes tailored to the kind of bird.
1 1/2": Ash-throated Flycatchers, Tree & Violet Green Swallows, Eastern Bluebirds, Western Bluebirds, Hairy Woodpeckers, Yellow-bellied Woodpeckers
1 1/4": Carolina Wrens, Downey Woodpeckers, Nuthatches (Brown-headed, Pygmy, Red-breasted), Titmouse Chickadees
1 1/8": Chickadees, Warblers, House Wrens, Bewicks Wrens
4 Screws are included to attach your Birdhouse Hole Protector
