Basic Composite Adjustable Inswing Sill

Note: Reeb no longer offers the Basic Composite Adjustable Inswing Sill. This article will remain available as a reference.

The Basic Composite Adjustable Inswing Sill has a wood-grained composite cap and nosing which resists rot and adds protection. It also features an all-composite substrate providing a solid stepping surface and superior rot-resistance. It has zinc dichromate screws with removable screw cap coverings which adjust to help maintain a tight seal. In a standard 6/8 unit, it has a rough opening of 82-1/2″.

Unit Capabilities


A Basic Composite Adjustable Inswing Sill can be used with single doors.


This sill is available for 4-9/16”, 5-1/4”, 6-9/16”, and 8-1/8” jamb depths.

Finish and Cap Color

This sill is available in a Mill finish with either a Light or Dark cap; it is also available with a Bronze finish with a dark cap.


Sill horns can be created by utilizing a sill extender.

Replacement Parts

Sill Caps or Saddles

In adjustable sills, this is the part of an adjustable sill which can be moved up or down by turning adjusting screws; another term for riser. Screw placement on the sill cap depends on the length of sill itself, verify sill length or on center screw dimension before ordering replacement sill caps.

Sill Nosing

A strip of composite or hardwood material that’s used towards the inside of the house to finalize the look of the sill. This piece might crack in the field and may need to be replaced from time to time depending on how often the entry is used. This is a special order item.

Screw Cap Cover

A plastic cap that is inserted into the saddle cap to cover the screws. This is a special order item.

Updated on March 4, 2023

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