TAHL is TDSL's own in house ironmongery company established in order to compliment the trading philosophy of our business. With staff qualified to the standards set by the Guild Of Architectural Ironmongers and a range of high quality hardware that guarantees fire and cyclic compatibility with the full range of our doors and doorsets, our one stop shop solution is completed by this specialist facility . One order, one product , one delivery , one invoice for total compliance and a service second to none.