How to choose Patio & Sliding Doors – Buying Guide : Sliding Doors
Quote from Article entitled How to choose Patio & Sliding Doors – Buying Guide:
Sliders and patio doors are made as a complete system and are sold with the jambs, threshold, and all necessary weatherstripping. The doors interlock for energy efficiency and the hardware is constructed as part of the system.
The full version of the article can be found here.