Henry® 547 Unipro Universal Underlayment Key Blanks Measures 25 inch long by

Measures 25 inch long by 7

Patented gel with Pipe Guard is the most powerful to penetrate and dissolve clogs

Save your hands from scratches

all ball bearing construction provides greater durability & longer life

Flexible bead

Henry® 547 Unipro Universal Underlayment Key Blanks Measures 25 inch long byExtremely versatile use with almost any substrate Non sanded formula trowels easily for a smooth finish Exceeds 5000 PSI compressive strength the highest available HENRY 547 Universal Underlayment is a Portland Cement based patch for smoothing interior surfaces to provide a permanent, smooth finish prior to the installation of new floor coverings.