How-to-install-a-gainsborough-door-handle, how to replace your door handle. give that old door a new latch on life - by better homes & gardens 29 aug 2016 over time, doorknobs and handles wear out, become hard to operate or just look shabby – like this 20-year-old bathroom knob. but replacing them is easy. most passage, privacy or entrance sets are sold as complete .... Get the best deals on gainsborough door handles. shop with afterpay on eligible items. free delivery and returns on ebay plus items for plus members. shop today!