![1 1/4" Aluminum Exterior Sill Extension](http://shop.discountdoor.com/cdn/shop/files/ExteriorSillExtension_{width}x.jpg?v=1714665805)
1 1/4" Aluminum Exterior Sill Extension
Our patio sliding door systems are available with exterior aluminum sill extensions
These are useful for concrete sill installation
One width available: 1 1/4", easily attaches to the existing patio door sill.
These are available as an upgrade only, and must be ordered at the same time as your patio door.
UD050124