Greenbats battens are kiln dried and pressure treated, help raise floor levels and can be laid loose over a DPM. Foam backed battens give excellent sound reduction. Foam backed battens are tested to certain requirements of BS7044:PArt4:1991. Coverage: Approx. 3.6 lin m of batten per m² at 305mm centres. Available in 22mm, 36mm, 48mm plain battens and 31mm, 45m and 57mm foam backed battens. 1.8 metre lengths. * Thickness includes batten and foam.