![RACO Metal Old-Work Backbox](http://flushtek.com/cdn/shop/products/raco-boxes-brackets-420-64_1000_{width}x.jpg?v=1581276834)
Amazon Affiliate Link (2 1/4" deep)
Amazon Affiliate Link (3" deep)
These RACO boxes work with FLUSHTEK models LC 4-2 through LC 4-4. They're available nationwide at Home Depot stores, or can be purchased online through the above links. Pricing is best in bulk through Home Depot.