Our Recommendation for Installing Vinyl Pergola Kits is wood posts and beams inserted into the hollow sleeves. We have used this method for years without any failures. The posts should be mounted to below frost depth in your area and secured with concrete or fastened securely to your deck or patio.
Where this is not possible or economical, aluminum inserts are an effective solution when installed correctly.
Available in 8', 10', 12', 14', 16' standard lengths as well as 18', 20' lengths and longer custom lengths with a minimum order.