| 411, Wall louvre, standard series | 33 | 45 % | 59 % |
| 411R, Round built-in louvre (with frame) | | 41 % | 59 % |
| 412, Wall louvre with chevron section blades | 20 | 39 % | 93 % |
| 412R, Round wall louvre with chevron section blades | | 39 % | 93 % |
| 421, Wall louvre, heavy-duty series | 50 | 49 % | 70 % |
| 421R, Round louvre (with frame) | | 47 % | 70% |
| 422, Wall louvre with chevron section blades, heavy-duty series | 33 | 43 % | 59 % |
| 425, Wall louvre, extra-heavy-duty series | | 55 % | 86 % |
| 427, Wall louvre, extra-heavy-duty series, with adjustable blades | | 53 % | 88 % |
| 450, Weatherable louvre | 50 | 57 % | |
| 451, Wall louvre, heavy-duty series | 66 | 49 % | 70 % |
| 452, Wall louvre, heavy-duty series with chevron section blades | 66 | 41 % | 70 % |
| 452V, Wall louvre, heavy-duty series with vertical chevron section blades | 66 | 41 % | 70 % |
| 453, Wall louvre, heavy-duty series, with coil blades | 65 | 55 % | 69 % |
| 468SA, Sand trap louvre | | 29 % | 29 % |
| 480, Wall louvre, heavy-duty series, high-airflow | 60 | 76 % | 90 % |
| 481, Wall louvre, heavy-duty series | 50 | 60 % | 70 % |
| 491, Storm wall louvre | 33 | 26 % | 57 % |
| 511, Wall louvre, standard series galvanised steel | 34 | 43 % | 61 % |
| 521, Wall louvre, heavy-duty series galvanised steel | 50 | 47 % | 68 % |
| 621, Wall louvre, heavy-duty series stainless steel | 50 | 47 % | 68 % |