The Nova Reduced Clearance Kit is an add-on item that reduces the back wall clearance to combustible requirement to 7.5.
Nova Reduced Clearance Kit
How You Can Reduce ANY Wood Heater Clearance!
Providing Outdoor Combustion Air for a Wood Stove
Ward Burner Systems - Power Burners, Raku Burners, and Kilns
Tips for Choosing and Installing a Woodstove - Fine Homebuilding
This floor mount is the perfect option to reduce your rear clearance from 20’’ to just 3’’ so that you can mount your stove against a wall safely and
CB-2020-SS Cub Floor Mount with Rear Heat Shield (stove and pipe NOT included!)
High Performance Soapstone Hybrid Wood Stove
9436B Reduced Clearance Square Ceiling Support Box DuraTech
Is this safe? : r/woodstoving