01-2014 Twister is a collection of handcrafted acoustic absorbing wall panels, ideal for small or bigger spaces with acoustic challenges. Twister is a dual coloured felt panel with an artistic look. Each Twister panel can be turned and positioned and placed together with other modules to form completely new patterns. Choose from a number of designs and colour combinations. Twister is designed by the designers Masoud Alavi and Kim Fridbjørg from the design- company Vvorks Acoustic beauty based on Fraster Felt TWISTER Technical specifications Size: 880 x 880 mm Thickness: 28 mm Acoustic absorbent: 20 mm plate of 100% polyester Foreground: 5 mm 100% wool felt Frame: Painted metal Weight: 3,7 kg Special size: Is possible. Contact Fraster. Twister is available with 40 mm acoustic absorbent Cleaning Vacuumclean Twister using a soft mouthpiece. Remove stains with lukewarm soapy water. Acoustic specifications The tests of acoustic absorption is made by Grontmij | Carl Bro to the norm DS/EN ISO 354 og DS/EN ISO 11654. The figure shows 3 tests: X - Twister with 20 mm acoustic absorbent mounted directly on the wall. Y - Twister with 20 mm acoustic absorbent mounted with 50 mm closed cavity to the wall. Z - Twister with 40 mm acoustic absorbent mounted with 50 mm closed cavity to the wall. Frequency (Hz) 100 160 250 500 1000 2000 4000 αw Class X 0,11 0,24 0,35 0,76 0,82 0,87 0,86 0,65 C Y 0,27 0,46 0,62 0,92 0,86 0,84 0,91 0,85 B Z 0,35 0,56 0,80 0,93 0,81 0,83 0,90 0,90 A t www.fraster.dkrf