Outdoor Accents Avant Post Base by Simpson Strong-Tie

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Start your project strong while showcasing your style with the Avant Post Base by Simpson Strong-Tie. The ideal foundation choice for outdoor projects such as pergolas, pavilions, patio covers and more, the Avant Post Base from the Simpson Outdoor Accents line anchors a support post or column to a concrete, brick, or wood surface with reliable strength. Crafted from ZMAX® galvanized steel and featuring a rich black powder-coated finish, the Avant adjustable post base is corrosion-resistant and features a 1 inch rise from the ground surface to prevent post-end rot due to ground water and moisture.

Avant Post Bases are sold individually and are offered to fit both nominal and rough-cut 4x4, 6x6, 8x8, or 10x10 post lumber sizes.

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DecksDirect # 45875
simpson strong tie

Technical and Installation Notes

MaterialZMAX® galvanized 12 gauge steel with black power-coat
Lumber Sizes4x4, 6x6, 8x8, and 10x10
Lumber TypeNominal or Rough Cut
(length, width, height)

4x4, Nominal: 3 in x 3-9/16 in x 6-3/4 in
4x4, Rough Cut: 3 in x 4-1/16 in x 6-1/2 in

6x6, Nominal: 5 in x 5-1/2 in x 6-13/16 in
6x6, Rough Cut: 5 in x 6 in x 6 9/16 in

8x8, Nominal: 7 in x 7-1/2 in x 9-3/8 in
8x8, Rough Cut: 7 in x 8 in x 9-1/8 in

10x10, Nominal: 9 in x 10 in x 9-1/2 in
10x10, Rough Cut: 9 in x 9-1/2 in x 9-3/4 in

Hardware NeededStructural wood screws and hex-head washers sold separately
WarrantyView Simpson Warranty Information

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