4G F-STYLE 4 x 1 Gallon Can Kit Requires Vermiculite

COR FOR 4/1 R/FS G CANS BOX(4G/Y39) 2 PARTITIONS 4 POLY- BAGS & CERTIFICATION ONLY. FITS FOUR METAL ROUND OR F-STYLE GALLON CANS. VERMICULITE REQUIRED. CERT #AA0632 HM01171712K & HM011216PS