STI® SpecSeal® intumescent wrap strip, flexible pre-cut, series: SSW, 11-1/4 in L, 3 in W, 1/8 in H, fire rating: up to 4 hr, blue, plastic. STI® SSWBLU230 SpecSeal® Flexible Pre-Cut Intumescent Wrap Strip, 11-1/4 in L x 3 in W, Up to 4 hr Fire Rating, Plastic