M-D Building Products Prova Universal Extension Kit® 12 In. X 36 In.

PROVA UNIVERSAL EXTENSION KIT® can be used to extend a PROVA PAN® base to any desired size. Perforated corner edges are easy to cut and allow for flexibility in shower base layouts. Design possibilities are endless when using multiple extension kits!4 piece extension kit that can be used to expand a shower base to any desired size when using multiple kitsPerforated corner edges are easy to cut and allow for flexibility in shower base layoutsExtensions have an outside thickness of 1-5/8″ and are comprised of lightweight expanded polystyreneExtensions can be used to extend a 48″ x 48″ or 32″ x 60″ PROVA-PAN®Use 1 kit to extend a 48″ x 48″ (1.2 m x 1.2 m) PROVA-SHOWER® base to a 48″ x 72″(1.2 m x 1.8 m) baseUse 2 kits to extend a 48″ x 48″ (1.2 m x 1.2 m) PROVA-SHOWER® base to a 72″ x 72″ (1.8 m x 1.8 m) basePremium polymer-modified thinset mortar required for installation. Premixed mortar or mastic are not to be used