Our Ultralift HD (Type D) balances are double sprung which provides extra lift, which results in a 70-75% mechanical advantage. Our ultralift balances are pre-tensioned so will not require any adjustment, saving you time and effort. In order to purchase the correct size balances for your window please complete all the information required in our sash balance calculator. If you are unsure then please contact our sales team for assistance on 01905 791876. Mistakes cannot always be rectified. Pre-tensioned balances do not require any adjusting Manufactured correctly to customers weight range requirements Double sprung balances All balances are sold in pairs For weights up to 50-60lbs (22.7-27.2kg) (Ultralift HD) C&D Balances – We recommend routing out a 19mm groove to house the balance All technical product drawings are in metric measurements
