For DITRA use the DITRA trowel, which features an 11/64'' x 11/64'' (4.5 mm x 4.5 mm) square-notched design, is recommended.
It is good practice to periodically lift a corner of the membrane after embedding it in the thin-set mortar to check the fleece for full coverage.
DITRA-TROWEL features a 11/64'' x 11/64'' (4.5 mm x 4.5 mm) square notch

Technical Details

Product Details

Package Dimensions
Width : 8.1 inch
Height : 3.7 inch
Length : 11.9 inch

Shipping Weight: 14.4 ounce (View shipping rates and policies)

ASIN : B003IS31TS