R400B mortise lock This security lock stands out for its easy installation as it does not require large mortising or special machines. It is an ideal lock for all types of wooden doors, both for new construction or for spare parts.It offers high security in the entrance door and its capability has been proven.The R400B lock is equipped with 4 nickel steel bolts (36mm diameter).4 key turns.It includes the E700L security escutcheon*We recommend downloading the technical sheet below to check all the possibilities. Downloads LMESLOR400B_Technical_document_1_TESA.pdf (.pdf, 355 kB) Close R100B mortise lockThe R100B single point security lock is an ideal lock for… R200B mortise lockThe R200B lock equipped with a handle and 4 nickel-plated…