Mixed Pack of Letterbox / Letter Plate Springs
Currently we are not accepting orders on this website, but you can still order most of our products on Amazon.co.uk. (Just Google 'Northern DIY Amazon Storefront'). We will recommence selling on the website later in the year. You are welcome to use this website for instructions and product specifications, but we are currently unable to answer technical queries unless it is with regards to an order you have previously placed.
This pack contains a total of 8 Springs comprising 2 of each of the following sizes 20mm, 26mm, 34mm and 39mm. These sizes are also sold individually in packs of 10. Either 1 or 2 springs can be fitted as required (using 2 springs doubles the force required to open the flap of the letterbox). Contrary to what many people expect a shorter coil gives a stronger restoring force when comparing coils of the same diameter made from the same gauge of wire.
The spring arms are approx. 24mm long (can be shortened with wire cutters). All the springs are suitable for rods up to 4.5mm diameter.
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