Chimney register Closure plate, wood burning stove MADE TO MEASURE TO YOUR SIZES | eBay
FP1-66/1000: Chimney liner "all you need fitting pack": 6" stove to 6" liner with 1000mm black pipe, cowl, adaptor, webbing, cement, data plate, nose cone, sealing plate. | Stovefitter's Warehouse | Reviews
Fiddled with things I shouldn't have fiddled with - help please? : r/DIYUK
Chimney Register Plates
SiS - Closure Plate Kit - 1000mm x 450mm x 1.5mm | Flue Components | Stove Industry Supplies