D31 de Petersen Gruppen

Water-brushed bricks
100 % charcoal fired

US sizes
DNF (Danish normal size) 8.9 x 4.2 x 2.1 inches
HF (Hamburg size) 8.6 x 4.1 x 2.5 inches
FF (Flensburg size) 8.9 x 4.2 x 1.5 inches

DNF size
228 x 108 x 54 mm
Technical data:
Colour: Yellow
Faces: 4
Bricks required: 64 PIECES/M2
Mortar required: 33 L/M2
Gross dry density: 1700 KG/M3
Compressive strength: 12-15 N/MM2
Water absorption: Normally absorbent, 12-14 Weight %

HF size
220 x 105 x 65 mm
Technical data:
Colour: Yellow
Faces: 4
Bricks required: 56 PIECES/M2
Mortar required: 30 L/M2
Gross dry density: 1700 KG/M3
Compressive strength: 12-15 N/MM2
Water absorption: Normally absorbent, 12-14 Weight %