Does this work with a standard 2x4?

The width of the 2x4 will fit into the vertical upright of the post base because the opening is made to accept 1-5/8" channel. However, less than half of the length of the 2x4 will be covered by the sides of the vertical upright because it is designed for 1-5/8” square channel.

Are there any specific large Caster wheels that can be used to fit into these post bases?

Good morning, Thank you for your question. At present there are no specific casters for use with Unistrut post bases. I'd suggest doing a search for "strut casters" on here and there is a good chance you will find something that might be modified to work. But at present there is no OEM item for post base casters. Thanks. Jeremy Brown Unistrut Service Company

where is this product manufactured?

Hi. This product is manufactured in the US. Thank you.

is this corrosion proof for outside usage?

Hi. The EG finish is not corrosion proof. A hot dipped finish would be more corrosion resistant. We don't offer that as an option on this platform but do on our other channels. Thanks. Jeremy Brown Unistrut Service Company

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UNISTRUT Genuine P2072ASQ-EG 1-5/8" Square Mount Post Base Strut Mount for All 1-5/8" Single Strut Channel

UNISTRUT Genuine P2072ASQ-EG 1-5/8" Square Mount Post Base Strut Mount for All 1-5/8" Single Strut Channel

Product ID: 23305731

📏1-5/8" Single Channel Precision Fit

🔩3/4" Diameter Mounting Holes for Secure Bolting

🛡️Electro-Galvanized ASTM B633 Type III Finish

65596CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Elevate your build with precision and durability that professionals swear by!

COMPACT YET STRONG DESIGN - 6" x 6" x 3.5" dimensions deliver a perfect balance of strength and space efficiency.
ROBUST MOUNTING STABILITY - 3/4" diameter mounting holes ensure rock-solid attachment and long-term durability.
TRUSTED BRAND RELIABILITY - Genuine UNISTRUT product with a 4.7-star rating from 90+ professionals—join the elite builders who trust it.
CORROSION RESISTANT FINISH - Electro-galvanized coating meets ASTM B633 Type III standards for superior rust protection.
PRECISION ENGINEERED COMPATIBILITY - Seamlessly fits P1000, P1100, P2000, P3000 & all 1-5/8" single strut channels for versatile installation.

The UNISTRUT P2072ASQ-EG is a genuine, electro-galvanized 1-5/8" square mount post base designed for all 1-5/8" single strut channels, including P1000, P1100, P2000, and P3000 series. Featuring 3/4" diameter mounting holes and a compact 6" x 6" x 3.5" size, it offers secure, corrosion-resistant support trusted by industry professionals.

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