Endura Products has released an update to our mull boot product line. This update includes the addition of a new size and a redesign of existing sizes to include a weatherstrip kerf slot, eliminating the need for weatherstrip notching in the installation process.

New Size
-  1" x 3-9/16" for Standard Inswing Sills

Updates:
- Added weatherstrip weatherstrip kerf to the existing designs for all mull boots in order to eliminate the need for weatherstrip notching in the installation process. 
- Added instructions for boot installation

New Standard copy3-9/16" Regular Mull Boot

fatboy copy(L) 3-9/16" OLD Fat Boy 
(R) 3-9/16" NEW Fat Boy