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Post caps are the second step in building a beautiful TimberTech and CableRail system. These caps add a stately feel to post sleeves with their subtly layered pyramid tops. The 5-1/16 inch opening is the perfect fit for TimberTech RadianceRail Post Sleeves, and no installation hardware is needed. RadianceRail Post Caps are available in five great finishes to enhance any decor.

Unsure about your size? Measure your posts carefully and use our Post Cap Diagram to understand critical dimensions and ensure a proper fit.


DecksDirect # 5934-1

TimberTech Railing and Lighting Installation (6.37 MB) 

TimberTech Railing and Lighting Catalog (3.85 MB) 

ColorsBlack, White
Pack SizeEach
Post Cap Opening Size5-1/16 in
Material TypeComposite
(width x depth x height)
7-1/4 in x 7-1/4 in x 2-1/4 in
Inset Measurement 1-3/4 in
Included AccessoriesNone
WarrantyView TimberTech Warranty Information
Simply attach the TimberTech LED Post Light Module to your TimberTech RadianceRail post cap via the included screws for a dazzling look both day and night.
Starting at: $66.99
TimberTech CableRail Intermediate Baluster
Starting at: $39.99
TimberTech RadianceRail CableRail Post Skirt - White
Starting at: $20.99
TimberTech RadianceRail CableRail Post Cover (White)
Starting at: $103.99
RadianceRail Top Rail - White
Starting at: $53.99

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