Haddonstone window heads suit three brick course heights in normal cavity wall situations: R1, plain-ended or tapered window heads; R2, plain-ended window heads with integral keystone; and R3, tapered window heads with integral keystone.

Window heads are available in the following lengths to suit British Standard brick openings in a normal cavity wall situation:

Please note that other head sizes can be manufactured to order.
Supporting lintels must be used as these window heads are not structural members.
We strongly recommend that you refer to BS 5628 Part 3: 2005.

R3 Head with P2 Cill