Delta 328 sq ft Standard 0.3125 in Flooring Underlayment Glue Down Tile suitable for most general purpose fastening '313307427 suitable for most general purpose fastening when matched with Grade 5 nuts and washers sanding and polishing Feet) 328 UNSPSC 30161700 Antimicrobial No Cushioning No For Use with Vinyl Plank Yes IIC Rating 20 25 STC Rating Less than STC 30 Vapor Barrier Yes Square Foot Coverage 328 Construction Type Polypropylene For Use with Porcelain No Moisture Resistant Yes Width (Feet) 4 Fast and easy to install Non allergenic Creates a sealed vapor barrier subfloor that prevents moisture rise and makes basements feel warm and dry Laminates can be installed directly on DELTA FL Provides a strong