JCs Wildlife Cedar & Poly Wren, Chickadee, Warbler Birdhouse, Blue Roof JCs Wildlife Exclusive Product Handmade in Southern Indiana! Made of Cedar and Recycled Poly Lumber- Guaranteed Not to Crack, Peel, or Fade Has a 1-1/8" Opening-- Perfect for Chickadees and House Wrens! Side Panel Opens For Easy Cleaning Design Allows for Excellent Ventilation and Drainage