You can download the relevant Declaration of Performance (DoP) below (pdf files):
| Cattle Slats | HPP12737-A3 | WQP12737-A3 |
| Gable Wall Beams | HPP13225-GWB | |
| Pig & Sheep Slats | HPP12737-B2B3 | WQP12737-B2B3 |
| Precast Concrete Beams | HPP13225 | WQP13225 |
| Precast Lintels (6x4s) | HPP845-LINT (6×4) | |
| Precast Lintels (9x4s) | HPP845-LINT (9×4) | |
| Prestressed Lintels (4x3s) | HPP 4×3 DoPs |