Description Prova Linear Pan Extensions The Prova linear system for tiled showers features a unique modular pan and extension structure that allows for complete versatility when building out any desired shower base size and drain placements. The system can be used with either Prova Board Plus tile backer or Prova Mat membrane to waterproof shower walls. Prova linear pan extensions are pre-sloped, waterproof pan components that can be used to extend the size of a linear shower base by adding them to existing linear pan pieces. Includes 2 pieces of Prova Linear Pan Extensions Each pan extension is 24″ x 24″ (to make a 4’x4′ shower into a 4’x6′) Each extension has an outside thickness of 1-5/8″ (4.1 cm) to 2-1/8″ (5.4 cm) and is comprised of lightweight expanded polystyrene Premium polymer-modified thinset mortar required for installation. Premixed mortar or mastic are not to be used
