To be clear, the DIY BMR Monitor is two different kits, sold by two different vendors.
The BMR Monitor DIY kits
, sold by Meniscus Audio, include all the drivers, crossover parts and cabinet hardware. The kits do include cabinet plans, but no wood cabinet parts.
The BMR Monitor cabinet kit
is sold separately by Speaker Hardware. It comes as a ready to assemble flat-pack, made with Baltic birch. It includes flush mount recess cutouts for all the drivers. The flush mount recess for the mid-range driver is not circular – it requires a custom-made router template. The photo shows the recessed cut outs for tweeter (top), mid-range (middle), and woofer (bottom). Please note that this photo is from someone who made his own cabinets. It does not show what the kit cabinets look like:
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Before anyone asks, only the BMR Monitor is available as a kit. No kit is available for the BMR Tower, and I doubt if any kit is being considered. The tower cabinet is quite a bit more complex than the monitor.