Allen are pleased to announce that our range of 20mm & 30mm through deck blocks is expanding to include stainless steel sheaves and recycled acetal sheaves.
​Allen's through deck blocks offer frictionless guidance for rope and wire control lines which are required to pass through a deck. Featuring a hard-wearing acetal body, shaped perfectly to house the sheave, which results in a performance that you can rely on for adjustable rigging and other highly loaded applications.
Available with one or two sheaves and in plain and ball bearing systems to suit a wide variety of applications.
| SKU | Title | breaking load kg | maximum line diameter mm | sheave size mm |
| A2121 | Dynamic Through Deck Single | 350 | 6 | 20 |
| A2121HL | Steel Sheave Through Deck Single | 400 | 6 | 20 |
| A2121P | Acetal Through Deck Single | 400 | 6 | 20 |
| A2122 | Dynamic Through Deck Double | 350 | 6 | 20 |
| A2122HL | Steel Sheave Through Deck Double | 350 | 6 | 20 |
| A2122P | Acetal Through Deck Double | 350 | 6 | 20 |
| A2131 | Dynamic Through Deck Single | 500 | 8 | 30 |
| A2131HL | Steel Sheave Through Deck Single | 500 | 8 | 30 |
| A2131P | Acetal Through Deck Single | 500 | 8 | 30 |
| A2132 | Dynamic Through Deck Double | 500 | 8 | 30 |
| A2132P | Acetal Through Deck Double | 500 | 8 | 30 |
