M-D 03100 Foam Tape, 1 in W, 13 ft L, 1/4 in Thick

Expands to seal seams and joints. When fully compressed Expand 'N Seal provides a waterproof seal. Use to seal out drafts, moisture, dust and pests. Seals a variety of areas including air conditioner units, around foundations, siding, gutters and flashings.