M-D Gray Synthetic Fiber Caulking Cord For Doors and Windows 30 ft. L X 1/8 in.

M-D Building Products, Inc. has a rich history of product development and manufacturing expertise. Beginning in 1920 as Macklanburg Duncan, the M-D story encompasses over 90 years of inventing and manufacturing products demanded by our customers. Our products are industry leaders or contend for industry leadership in the categories of weatherization, flooring tools, flooring accessories and digital levels.