Ive still been creepin on the build haha...i dont think u need a whole ss window frame....do u plan on drilling the acrylic at all? Imo u just need 4 bolts in the corners to hold the glass up during a water change. The ahdesive will hold the window to liner no prob. My 650 window is just free standing with adhesive alone, no bolts. U could also use a piece of ss angle iron on the inside top lip of the window frame to hold the glass in, that way the angle is bolted to the wood on top and theres no bolts needed through the acrylic.
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