Product Info Catalog Building Materials Windows Window Wells Bubble Window Well Cover, Circular, 44-1/2 x 20 x 18-1/2-In. Bubble Window Well Cover, Circular, 44-1/2 x 20 x 18-1/2-In. Request a Quote UPC: 39694044182 Manufacturer: Maccourt Products Inc SKU: 507798 Model Number: W4418 44-1/4" x 20" x 18-1/2" circular bubble window well cover.