Product Info Catalog Building Materials Windows Window Wells Bubble Window Well Cover, Circular, 43 x 18 x 12-In. Bubble Window Well Cover, Circular, 43 x 18 x 12-In. Request a Quote UPC: 39694042188 Manufacturer: Maccourt Products Inc SKU: 507772 Model Number: W4218 43" x 18" x 12" circular bubble window well cover.