AWSCO
Hager Hinge
Hy-Lite®, a U.S. Block Windows Company

Subcategory: Glass Block
Material: Aluminum, Vinyl
Hy-Lite block door inserts allow light to pass through your home, flowing from room to room. Available for both interior and exterior doors, the pre-assembled units transform ordinary doors into distinctive design elements, while providing privacy and security.
Jamsill
Johnson Hardware
Marwin
National Guard Products

Subcategory: Weatherstrip
The variety of gasketing products seal gaps and air leaks all around the door.

Subcategory: Vision Lites & Louvers
Although vision lites are a relatively small part of each door opening, there's a variety of shapes and sizes to create just the look you want.