M-D Building Products Pliable Rope Caulk *Application: Door and Window *Material: Synthetic Fiber *Product Type: Caulk Backer Rod *Stripping Length: 30 ft. *Thickness: 1/8 in. *Color Family: White *Packaging Type: Carton *Hardware Included: No *Self Adhesive: Yes *Replaceable caulking cord* Forms a flexible seal inside and outside* Seals cracks around window frames and doors* Easy to apply - no tools required *Discovery NBR, SUP