Box Immersion Spanner Product Code: 29549

3 3/8" (86mm) A/F. Immersion heater spanner with separate tommy bar. Without slot to ensure removal of immersion heater flex and to reduce the possibility of electric shock.


  • Steel Construction
Additional Information
Technical Specification
  • Brand : Monument Tools
  • Total Product Weight : 0.705 kg
  • Model No : SFX358J
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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€10.45 Incl. 20% VAT

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Box Immersion Spanner is rated 3.7 out of 5 by 14.
Rated 5 out of 5 by from Does what it says... I tried stilsons, I tried everything but nothing would shift my immersion, which had been in place since 1965, yes 1965. Two minutes after I got this box spanner delivered, the job was done. If your old immersion won't budge, this is what you need. Also handy for tightening up the new one!
Date published: 2019-06-30
Rated 4 out of 5 by from Functional Bought to replace a cranked spanner which didn't fit an immersion unit. This one does what it's meant to do.
Date published: 2014-07-18
Rated 4 out of 5 by from Box Immersion Spanner I try this box spanner after buying Ring spanner to remove Heater. Has they was no room to turn Ring spanner and was bend the top of tank the box spanner was larger than the ring spanner by 1mm and slip round heater nut till filling gap with 2p coin one of the flats work great after that
Date published: 2014-07-13
Rated 4 out of 5 by from Spot on After struggling for an hour with a flat one, I decided to take a gamble with this one. I was not disappointed. Within thirty seconds, the old element was out. One slight drawback; there is a very small amount of play which could potentially cause a few burrs if you over tighten
Date published: 2013-11-13
Rated 5 out of 5 by from excellent for price removed my heater in no time. fitted the new one. In all it took me about five minutes excluding draining tank. you always get someone who expect something for nothing and then moan about it !!!!!!!!!!!!!!
Date published: 2013-09-03
Rated 4 out of 5 by from pucka did the job nicely, element was well and truly rusted in. With some help from hammer on shaft of spanner, element gave way. All good, lots of hot water now
Date published: 2013-03-24
Rated 2 out of 5 by from Only just did the job. Spanner was too big for old heater. I had to bash flat sides of spanner with a hammer to stop it slipping. Spanner fit new heater ok but was still not a tight fit. Were these heaters made smaller years ago? The old one I was taking out had been there for about 30 years and was stuck solid. I heated area with a gas blow torch then gave the brass part of the old heater a couple of squirts of cold water. A sharp tap on the tommy bar of the spanner and hey presto!
Date published: 2010-03-11
Rated 5 out of 5 by from Best tool I have purchased Made installation of immerser simple and easy for an amateur
Date published: 2009-12-16
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