From Triad
The SlimSub was designed to fit into a 4" deep wall with a flush grill. The grill can be painted any color you want, to match your walls, with the submission of a paint sample or paint number to your authorized Triad dealer. All grills do not look the same. We think our Acoustimesh grills look very good, and the free custom paint makes a difference. BTW, we build and paint everything to order, and we don't ship out of inventory because we build this stuff in the United States. We're one of the last speaker companies to do this.
Your statement that our enclosure is particleboard is incorrect. Triad has ALWAYS made it's enclosures from premium MDF. You must be thinking of almost everybody else.
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As far as box-build quality, I'll put us up against anyone.
The SlimSub is not a killer sub, due to the shallow driver, but two work nicely. Getting bass out of a 4"-deep wall is hard, and no one has been able to get knock-you-down bass in that form, unless the enclosure protrudes from the wall. The SlimSub is 8 ohms, and it was designed so you can use two on one RackAmp with good results.
I like Artison, and we are friendly with them. Good products.