Startsidan The Company Products Window Guide References Support Document Library Inspiration Contact us Öppna Klicka Startsidan The Company Market Quality Environment Factory Products Product Matrix Stil Side-hung Windows LIF951, Inward Opening Window 2+1 Glazing LIF953, Inward Opening Window Triple Glazing LIF954, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF951, Inward Opening Tilt/turn 2+1 Glazing LKF953, Inward Opening Tilt/turn Triple Glazing LKF954, Inward Opening Tilt/turn 3+1 Glazing LKF2454, Inward Opening Tilt/turn 2+1 Glazing, Double Frame Fixed Lights LFU953, Fixed Light Triple Glazing LFI953, Fixed Light Triple Glazing, Internally Glazed LFU2454, Fixed Light Triple Glazing, Double Frame Patio Doors Outwards Opening LUD951, Outward Opening Patio Door 2+1 Glazing LUD953, Outward Opening Patio Door Triple Glazing LUD2454, Outward Opening Patio Door 2+1, Double Frame Patio Doors Inwards Opening LID951, Inward Opening Patio Door 2+1 Glazing LID953, Inward Opening Patio Door Triple Glazing LID2454, Inward Opening Patio Door 2+1 Glazing, Double Frame Sliding Doors LID783, sliding Door Triple Glazing LID1183, sliding door low threshold Haga Side-hung Windows LIF1001, Inward Opening Window 2+1 Glazing LIF1003, Inward Opening Window Triple Glazing LIF1004, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF1001, Inward Opening Tilt/turn 2+1 Glazing LKF1003, Inward Opening Tilt/turn Triple Glazing LKF1004, Inward Opening Tilt/turn 3+1 Glazing LKF2504, Inward Opening Tilt/turn 2+1 Glazing, Double Frame Fixed Lights LFU1003, Fixed Light Triple Glazing LFI1003, Fixed Light Triple Glazing, Internally Glazed LFU2504, Fixed Light Triple Glazing, Double Frame Patio Doors Outwards Opening LUD1001, Outward Opening Patio Door 2+1 Glazing LUD1003, Outward Opening Patio Door Triple Glazing LUD2504, Outward Opening Patio Door 2+1, Double Frame Patio Doors Inwards Opening LID1001, Inward Opening Patio Door 2+1-glazing LID1003, Inward Opening Patio Door Triple Glazing LID2504, Inward Opening Patio Door 2+1 Glazing, Double Frame Combination Frames Combination Windows, 2+1 and Triple Glazing Sliding Doors LID833, sliding Door Triple Glazing LID1183, sliding door low threshold Epok Side-hung Windows LIF1271, Inward Opening Window 2+1 Glazing LIF1273, Inward Opening Window Triple Glazing LIF1274, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF1271, Inward Opening Tilt/turn 2+1 Glazing LKF1273, Inward Opening Tilt/turn Triple Glazing LKF1274, Inward Opening Tilt/turn 3+1 Glazing Fixed Lights LFI1273, Fixed Light Triple Glazing, Internally Glazed Patio Doors Outwards Opening LUD1271, Outward Opening Patio Door 2+1 Glazing LUD1273, Outward Opening Patio Door Triple Glazing Patio Doors Inwards Opening LID1271, Inward Opening Patio Door 2+1 Glazing LID1273, Inward Opening Patio Door Triple Glazing Combination Frames Combination Windows, 2+1 and Triple Glazing Sliding Doors LID1103, sliding Door Triple Glazing Royal Side-hung Windows LIF1281, Inward Opening Window 2+1 Glazing LIF1283, Inward Opening Window Triple Glazing LIF1284, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF1281, Inward Opening Tilt/turn 2+1 Glazing LKF1283, Inward Opening Tilt/turn Triple Glazing LKF1284, Inward Opening Tilt/turn 3+1 Glazing Fixed Lights LFI1283, Fixed Light Triple Glazing, Internally Glazed Patio Doors Outwards Opening LUD1281, Outward Opening Patio Door 2+1 Glazing LUD1283, Outward Opening Patio Door Triple Glazing Patio Doors Inwards Opening LID1281, Inward Opening Patio Door 2+1 Glazing LID1283, Inward Opening Patio Door Triple Glazing Combination Frames Combination Windows, 2+1 and Triple Glazing Accessories Customized windows Shaped windows Double frame sound reduction Astragal Stil profile astragals Haga profile astragals Epok profile astragals Royal profile astragals Fixed frame astragals Fittings Handles Hoppe Tôkyô Hinge Parallel opening OBV window restrictor Trickle Vents Biobe Fresh Omega Louvre Glass Dynamic solar protection Discontinued Side-hung Windows LIF781, Inward Opening Window 2+1 Glazing LIF783, Inward Opening Window Triple Glazing LIF831, Inward Opening Window 2+1 Glazing LIF833, Inward Opening Window Triple Glazing LIF1101, Inward Opening Window 2+1 Glazing LIF1103, Inward Opening Window Triple Glazing LIF681, Inward Opening Window 2+1 Glazing LIF683, Inward Opening Window Triple Glazing LIF851, Inward Opening Window 2+1 Glazing LIF853, Inward Opening Window Triple Glazing Tilt/turn Windows LKF781, Inward Opening Tilt/turn 2+1 Glazing LKF783, Inward Opening Tilt/turn Triple Glazing LKF831, Inward Opening Tilt/turn 2+1 Glazing LKF833, Inward Opening Tilt/turn Triple Glazing LKF1101, Inward Opening Tilt/turn 2+1 Glazing LKF1103, Inward Opening Tilt/turn Triple Glazing LKF681, Inward Opening Tilt/turn 2+1 Glazing LKF683, Inward Opening Tilt/turn Triple Glazing LKF851, Inward Opening Tilt/turn 2+1 Glazing LKF853, Inward Opening Tilt/turn Triple Glazing Fixed Lights LFU783, Fixed Light Triple Glazing LFU833, Fixed Light Triple Glazing LFI1103, Fixed Light Triple Glazing LFI683, Fixed Light Triple Glazing LFI853, Fixed Light Triple Glazing Patio Doors Inwards Opening LID781, Inward Opening Patio Door 2+1 glazing LID783, Inward Opening Patio Door Triple Glazing LID831, Inward Opening Patio Door 2+1 glazing LID833, Inward Opening Patio Door Triple Glazing LID1101, Inward Opening Patio Door 2+1-glazing LID1103, Inward Opening Patio Door Triple Glazing LID681, Inward Opening Patio Door 2+1 glazing LID683, Inward Opening Patio Door Triple Glazing LID851, Inward Opening Patio Door 2+1 Glazing LID853, Inward Opening Patio Door Triple Glazing Patio Doors Outwards Opening NLUD781, Outward Opening Patio Door 2+1 Glazing NLUD783, Outward Opening Patio Door Triple Glazing NLUD831, Outward Opening Patio Door 2+1 Glazing NLUD833, Outward Opening Patio Door Triple Glazing NLUD1101, Outward Opening Patio Door 2+1 Glazing NLUD1103, Outward Opening Patio Door Triple Glazing Combination Frames Combination Windows 78 mm Frame Combination Windows 83 mm Frame Combination Windows 110 mm Frame Combination Windows 68 mm Frame Combination Windows 85 mm Frame Window Guide References Interviews Support Functions Warranties Document Library Inspiration Contact us The Company Market Quality Environment Factory Products Product Matrix Stil Side-hung Windows LIF951, Inward Opening Window 2+1 Glazing LIF953, Inward Opening Window Triple Glazing LIF954, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF951, Inward Opening Tilt/turn 2+1 Glazing LKF953, Inward Opening Tilt/turn Triple Glazing LKF954, Inward Opening Tilt/turn 3+1 Glazing LKF2454, Inward Opening Tilt/turn 2+1 Glazing, Double Frame Fixed Lights LFU953, Fixed Light Triple Glazing LFI953, Fixed Light Triple Glazing, Internally Glazed LFU2454, Fixed Light Triple Glazing, Double Frame Patio Doors Outwards Opening LUD951, Outward Opening Patio Door 2+1 Glazing LUD953, Outward Opening Patio Door Triple Glazing LUD2454, Outward Opening Patio Door 2+1, Double Frame Patio Doors Inwards Opening LID951, Inward Opening Patio Door 2+1 Glazing LID953, Inward Opening Patio Door Triple Glazing LID2454, Inward Opening Patio Door 2+1 Glazing, Double Frame Sliding Doors LID783, sliding Door Triple Glazing LID1183, sliding door low threshold Haga Side-hung Windows LIF1001, Inward Opening Window 2+1 Glazing LIF1003, Inward Opening Window Triple Glazing LIF1004, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF1001, Inward Opening Tilt/turn 2+1 Glazing LKF1003, Inward Opening Tilt/turn Triple Glazing LKF1004, Inward Opening Tilt/turn 3+1 Glazing LKF2504, Inward Opening Tilt/turn 2+1 Glazing, Double Frame Fixed Lights LFU1003, Fixed Light Triple Glazing LFI1003, Fixed Light Triple Glazing, Internally Glazed LFU2504, Fixed Light Triple Glazing, Double Frame Patio Doors Outwards Opening LUD1001, Outward Opening Patio Door 2+1 Glazing LUD1003, Outward Opening Patio Door Triple Glazing LUD2504, Outward Opening Patio Door 2+1, Double Frame Patio Doors Inwards Opening LID1001, Inward Opening Patio Door 2+1-glazing LID1003, Inward Opening Patio Door Triple Glazing LID2504, Inward Opening Patio Door 2+1 Glazing, Double Frame Combination Frames Combination Windows, 2+1 and Triple Glazing Sliding Doors LID833, sliding Door Triple Glazing LID1183, sliding door low threshold Epok Side-hung Windows LIF1271, Inward Opening Window 2+1 Glazing LIF1273, Inward Opening Window Triple Glazing LIF1274, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF1271, Inward Opening Tilt/turn 2+1 Glazing LKF1273, Inward Opening Tilt/turn Triple Glazing LKF1274, Inward Opening Tilt/turn 3+1 Glazing Fixed Lights LFI1273, Fixed Light Triple Glazing, Internally Glazed Patio Doors Outwards Opening LUD1271, Outward Opening Patio Door 2+1 Glazing LUD1273, Outward Opening Patio Door Triple Glazing Patio Doors Inwards Opening LID1271, Inward Opening Patio Door 2+1 Glazing LID1273, Inward Opening Patio Door Triple Glazing Combination Frames Combination Windows, 2+1 and Triple Glazing Sliding Doors LID1103, sliding Door Triple Glazing Royal Side-hung Windows LIF1281, Inward Opening Window 2+1 Glazing LIF1283, Inward Opening Window Triple Glazing LIF1284, Inward Opening Window 3+1 Glazing Tilt/turn Windows LKF1281, Inward Opening Tilt/turn 2+1 Glazing LKF1283, Inward Opening Tilt/turn Triple Glazing LKF1284, Inward Opening Tilt/turn 3+1 Glazing Fixed Lights LFI1283, Fixed Light Triple Glazing, Internally Glazed Patio Doors Outwards Opening LUD1281, Outward Opening Patio Door 2+1 Glazing LUD1283, Outward Opening Patio Door Triple Glazing Patio Doors Inwards Opening LID1281, Inward Opening Patio Door 2+1 Glazing LID1283, Inward Opening Patio Door Triple Glazing Combination Frames Combination Windows, 2+1 and Triple Glazing Accessories Customized windows Shaped windows Double frame sound reduction Astragal Stil profile astragals Haga profile astragals Epok profile astragals Royal profile astragals Fixed frame astragals Fittings Handles Hoppe Tôkyô Hinge Parallel opening OBV window restrictor Trickle Vents Biobe Fresh Omega Louvre Glass Dynamic solar protection Discontinued Side-hung Windows LIF781, Inward Opening Window 2+1 Glazing LIF783, Inward Opening Window Triple Glazing LIF831, Inward Opening Window 2+1 Glazing LIF833, Inward Opening Window Triple Glazing LIF1101, Inward Opening Window 2+1 Glazing LIF1103, Inward Opening Window Triple Glazing LIF681, Inward Opening Window 2+1 Glazing LIF683, Inward Opening Window Triple Glazing LIF851, Inward Opening Window 2+1 Glazing LIF853, Inward Opening Window Triple Glazing Tilt/turn Windows LKF781, Inward Opening Tilt/turn 2+1 Glazing LKF783, Inward Opening Tilt/turn Triple Glazing LKF831, Inward Opening Tilt/turn 2+1 Glazing LKF833, Inward Opening Tilt/turn Triple Glazing LKF1101, Inward Opening Tilt/turn 2+1 Glazing LKF1103, Inward Opening Tilt/turn Triple Glazing LKF681, Inward Opening Tilt/turn 2+1 Glazing LKF683, Inward Opening Tilt/turn Triple Glazing LKF851, Inward Opening Tilt/turn 2+1 Glazing LKF853, Inward Opening Tilt/turn Triple Glazing Fixed Lights LFU783, Fixed Light Triple Glazing LFU833, Fixed Light Triple Glazing LFI1103, Fixed Light Triple Glazing LFI683, Fixed Light Triple Glazing LFI853, Fixed Light Triple Glazing Patio Doors Inwards Opening LID781, Inward Opening Patio Door 2+1 glazing LID783, Inward Opening Patio Door Triple Glazing LID831, Inward Opening Patio Door 2+1 glazing LID833, Inward Opening Patio Door Triple Glazing LID1101, Inward Opening Patio Door 2+1-glazing LID1103, Inward Opening Patio Door Triple Glazing LID681, Inward Opening Patio Door 2+1 glazing LID683, Inward Opening Patio Door Triple Glazing LID851, Inward Opening Patio Door 2+1 Glazing LID853, Inward Opening Patio Door Triple Glazing Patio Doors Outwards Opening NLUD781, Outward Opening Patio Door 2+1 Glazing NLUD783, Outward Opening Patio Door Triple Glazing NLUD831, Outward Opening Patio Door 2+1 Glazing NLUD833, Outward Opening Patio Door Triple Glazing NLUD1101, Outward Opening Patio Door 2+1 Glazing NLUD1103, Outward Opening Patio Door Triple Glazing Combination Frames Combination Windows 78 mm Frame Combination Windows 83 mm Frame Combination Windows 110 mm Frame Combination Windows 68 mm Frame Combination Windows 85 mm Frame Window Guide References Interviews Support Functions Warranties Document Library Inspiration Contact us Search leiab.se Search leiab.se Enter keywords Svenska English Dansk Start Page / Products Accessories Customized windows Double frame sound reduction Frame thickness: 250-300 mm Sound reduction: 60-69 dB U-value: lägre än 0,9 W/m²K Download as pdf LEIAB can offer a new concept consisting of double frames in order to achieve very high levels of noise reduction. Virtually all of our models are available for the outer window or patio door. An inner window or patio door, made without the aluminium frame, is then fitted inside the outer product, creating a double frame solution. Using this system we can offer noise reduction of over 60 dB. Even using standard glass the noise reduction is substantial, meaning that the need for heavy laminated specialty glass is often eliminated. The outer and inner products are fitted seperately, with a minimum distance of 250 mm between them to ensure that maximum noise reduction is achieved. They can also be fitted wider apart if desired. We have performed sound tests on distances between 170-300 mm. Both units open separately. For the standard option both units are either inward opening with the outer sash passing the inner frame, or with the outer unit opening outward and the inner product opening inwards. Product images Original configuration Original configuration Original configuration Original configuration Original configuration Original configuration Original configuration Original configuration Original configuration Original configuration Multi-light windows and accessories Multi-light windows and accessories Multi-light windows and accessories Sound reduction test Sound reduction test Maiden Lane project Maiden Lane project References Project name Maiden Lane Client John Sisk & Son Ltd Location/town London Window model Stil Project name Master Robert Site Hotel Client T.W. Construct LTD. Location/town London Window model Haga Project name Material Store Client Invest Mag Ltd. Location/town London Window model Royal