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For simplicity and protection, look no further for finishing off your railing than the AL13 Pro Post Cap. These post caps are designed to fit perfectly over the AL13 Pro posts and comes in Gloss White.

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


DecksDirect # 5045

Fortress Warranty (245 KB) 

AL13 Pro Rail Installation (1024 KB) 

Finishes Gloss White
Pack SizeEach
Material Type Aluminum
(width x depth x height)
3-1/8 in x 3-1/8 in x 5/8 in
Post Cap Opening Size
3-1/16 in
Inset Measurement
1/2 in
Package Contents(1) post cap, (2) set screws, and (1) allen wrench
WarrantyView Fortress Warranty Information
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