The shell is of the bursting type and is used with a separate loading cartridge in the 10.5 cm l.F.H. 18 (gun howitzer).

The length of the shell with fuze (kl.A.Z. 23 Nb.) is 19.25 inches and the weight 30.8 lb. The body is painted olive green and marked prominently in white above the driving band with the letters "Nb" in two places.

The general construction and method of filling and charging of the shell is the same as with the 7.5 cm shell of this type described in Pamphlet No. 4 which includes a drawing (Fig. 17).

This 10.5 cm shell has a burster consisting of 1.925 grains of pressed picric acid crystals in a paper tube which rest on three fibre washers in the base of the long central burster container. The gaine, is an exploder container at the head of the burster container, is the C/98 (Zdlg C/98), a description of which is included in this pamphlet. The charging of oleum /pumice weighs 4.1 lb. The inclusion of pumice gives a slight increase in the pre-sistence of the smoke. According to German documents the smoke cloud formed on burst has a diameter of 80 to 100 feet.

The 10.5 cm l.F.H. also fires a more recent design streamlined smoke shell known as "F.H.Gr. 38 Nb". The fuze is the same, i.e., kl.A.Z. 23 Nb, but the filled weight of the shell is 32.4 lb and the diameter of the smoke cloud formed is given as 100 to 190 feet. The body and base of the shell are marked "38 Nb" in white.