Herrnhuter Holzmanufaktur GmbH is a joinery in Upper Lusatia whose timber tradition dates to 1745 and which now specialises in made-to-measure T30 fire doorsets, smoke-control doors, acoustic doors and burglar- and bullet-resistant leaves, largely in FSC- and PEFC-certified timber. Its fire doorsets are produced under an ift Rosenheim Übereinstimmungszertifikat with factory production control, and are classified against DIN 4102-5 for the T30 rating. The workshop also fits out churches and heritage interiors where fire-rated joinery must match historic detailing.