Sold in 55 lb. pails.
Wet, Air-Setting, Thick Patching Mortar.
3200ºF maximum service temperature.

Greenpatch 421 Mortar Data PDF

26 in stock


Similar to SAIRSET but with increased workability and better bond strength. Can be used as is or thinned with water. Can be used for skim coating. Max service temperature 3200 F.

Additional information

Weight 55.00 lbs
Dimensions 12.5 × 12.5 × 12 in