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Maximum Differential Pressure Ratings (Close-off) (psi): 20 psi
(1) Dig a hold 8-12" in diameter and 20" deep that is wide at the bottom than at the top
Quick change mandrels feature double set screws with a recessed combination head for quick and easy centering bit changes
Allows each channel to securely lock to the next for a secure
Black Jack® 5227-1-20 Acrylic Roof Patch, 3.6 Qt, White 4thJuly Maximum Differential Pressure Ratings (Close-off)Black Jack Roof Patch is an extra tough, flexible repair compound designed to patch splits, cracks and holes in roof surfaces. This water based patch dries quickly to a non tacky surface which offers great adhesion to all coatings applied over it. It is designed to repair cracks and holes up to 1" in width. Black Jack Roof Patch should be used with seam and repair fabric. Black Jack Roof Patch remains flexible while it expands and contracts with your