Gives shelter to your local wrens and their young, and contibutes to Going Green!. 5/8" Recycled poly lumber w/taupe base, green roof, flat plexy bottom, stainless steel screws, and metal hanging cable. Poly-lumber made from recycled plastic and milk jugs, lifetime manufacturer"s guarantee to never crack, split or fade. Measures 7-1/2 inches high, 9 inches wide when hanging, 1-1/8 inch entrance hole. Clear plexiglass bottom is secured with metal latch, and can be removed for easy cleaning.