Through Deck Block Range Expands 

We are pleased to announce that our range of 20mm & 30mm through deck blocks is expanding to include stainless steel sheaves and recycled acetal sheaves. 

Our 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


Allen to sponsor RS100, RS300 and RS600 National Championships at Brixham YC

RS600 Sailing in Weymouth Harbour

We are delighted to announce our support of the RS100, RS300 and RS600 National Championships, by providing prize vouchers for the top three boats in each fleet.

The Championship will take place at Brixham YC from 9th-12th Sept 2021. Online entry opened on Saturday and 53 of the 66 places were taken in 24hours, with a waiting list building for the RS100 class.

At Allen we manufacture many of the standard and custom fittings found across the RS ranges; all of which are designed and manufactured from our factory in Essex then exported around the World.


New Product Announcement – Flanged Aluminium Deck Bush

New for 2021 flanged deck bush

We are pleased to announce a new range of flanged aluminium deck bushes is now available.

The new range of flanged aluminium deck bushes is a result of feedback from the marine industry and sailors looking for an alternative installation method to our ever-growing range of screw and push in aluminium deck bushes.

Allen flanged aluminium deck bushes feature a wider surface area with two fixing holes, allowing for a simple installation which only requires two screws and no messy bonding agent or silicone.

Four sizes are now available, all of which match the pre-existing range of nylon flanged deck bushes. Making replacement of an old worn-out plastic deck bush with a new aluminium version easy and seamless.

The new range is milled in-house at the Allen factory in Essex from marine grade 6082 aluminium and anodised in a variety of six colours to allow for a personalised touch or to colour code control lines.

View the range by clicking here or the SKU below. 

SKU Title Fixing Hole Centres mm Fixing Hole Depth mm Fixing Hole Diameter mm Inside Diameter mm Outside Diameter mm Weight g RRP ex VAT
A8039  Flanged Deck Bush 29 9 4 9 19 9  £14.00
A8239  Flanged Deck Bush 32 9 4 13 21 10  £15.53
A8339  Flanged Deck Bush 36 9 4 15 24 12  £15.53
A8139  Flanged Deck Bush 44 9 4 23 33 16  £18.66


What is a deck bush? A deck bush, also known as a fairlead, is designed to protect a surface from a rubbing rope or wire, they can also be used to act as a deflecting point. In most applications, a deck bush is used to guide a rope through a surface, such as the thwart or strut of a boat. It also offers protection to the material the rope or wire is passing through. 


For more information please contact the Allen sales team – – +44(0) 1621 774689 

Archives by Subject:

Archives by Month: