You'll love the 38'' W 38'' D Neo-Angle Triple Shower Base at Wayfair - Great Deals on all Home Improvement products with Free Shipping on most stuff, even the big stuff.
CRAFT + MAIN Cove 38 in. L x 38 in. W x 78 in. H 3-Piece Corner
DreamLine Prism Lux 40 3/8 in. x 40 3/8 in. x 72 in. Fully
DreamLine 36 in. D x 36 in. W x 76 3/4 in. H SlimLine Double
SlimLine Neo Angle Shower Base - Dreamline
Ove Decors Tampa 38 in. L x 32 in. W x 72 in. H Alcove Shower Kit
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Davana Neo-angle 38 x 38 x 75 in. 8mm Pivot Shower Door for Corner
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DreamLine SHEN-2138380 Prism 38-1/8 Neo-Angle Shower Enclosure