Home / Insulation / Cavity Wall Insulation / Knauf Dritherm 37 Knauf Dritherm 37 Knauf Earthwool Dritherm 37 is great value, full fill cavity wall insulation. Online Insulation offer the best prices on both Dritherm 37 and also the ultimate grade Dritherm 32. Sort By Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A 8 Products Sort 100mm Knauf Dritherm 37 100x455x1200mm *15 Pack Best Price Deal* £511.99 £426.66 (ex. VAT) Add to Cart 100mm Knauf Dritherm 37 100x455x1200mm - 6.55 M2 Pack £35.10 £29.25 (ex. VAT) Add to Cart 125mm Knauf Dritherm 37 125x455x1200mm *40 Pack Best Price Deal* £1,343.12 £1,119.27 (ex. VAT) Add to Cart 150mm Knauf Dritherm 37 150x455x1200mm - 20 Pack Pallet £862.09 £718.41 (ex. VAT) Add to Cart 50mm Knauf Dritherm 37 50x455x1200mm - 6.55 M2 Pack £23.86 £19.88 (ex. VAT) Add to Cart 65mm Knauf Dritherm 37 65x455x1200mm *40 Pack Best Price Deal* £1,112.44 £927.03 (ex. VAT) Add to Cart 75mm Knauf Dritherm 37 75x455x1200mm - 4.37 M2 pack £18.82 £15.68 (ex. VAT) Add to Cart 85mm Knauf Dritherm 37 85x455x1200mm *45 Pack Best Price Deal* £903.39 £752.83 (ex. VAT) Add to Cart