The 42" TRU-LINE Linear Drain Kit consists of a formed stainless steel channel body and a grate assembly that can be seamlessly adjusted to the thickness of the ceramic tile or stone covering from 1/4" to 1". The channel body features a standard 2" no-hub outlet and is attached to the pipe using an appropriate flexible or no-hub coupling. The simple connection to standard drain outlets makes TRU-LINE suitable for new construction and renovation. **Installation with Pre-sloped floor tray** Because we at Trugard Systems do not currently supply a polystyrene Pre-sloped tray system, we recommend the mortar mud bed as the least expensive system. If someone does want to use a polystyrene pre-sloped tray system however, that is okay, as we have many tile contractors and do-it-yourselfers that have successfully installed the Trugard Drain with different brands of the styrofoam trays.***Slight trimming modifications may be required for the best fit.*** TRU-LINE Linear Drain's are available in lengths from 28" to 48". Please note that the bonding flange extends approximately 7/8" beyond the channel on all sides.