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Sliding door security bar

Updated: October 2026

A sliding door security bar can stop the panel travelling sideways, once you have measured the clear opening and taken the yoke off. It will not stop someone lifting that panel out of the frame, and it is a poor hold-open for a breeze. Peter F. updated this page on 20 October 2026 from amazon.co.uk listings, with no laboratory test. A qualifying purchase can earn a commission at no extra cost to you. The ranked braces are on the [door security bar comparison](/hub/door-and-window-security/door-security-bar).

A sliding door security bar can stop the panel travelling sideways, once you have measured the clear opening and taken the yoke off.

Our top picks

Pindex Pindex sliding and hinged door security bar, 1.1–1.4 m

Best overall

Pindex Pindex sliding and hinged door security bar, 1.1–1.4 m
9.2/10about £16.99
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Amazon Basics Amazon Basics adjustable security bar, black

Best value

Amazon Basics Amazon Basics adjustable security bar, black
9.0/10about £19.94
View offer
Defender Defender adjustable door security bar HA00721

Rank 3

Defender Defender adjustable door security bar HA00721
9.0/10about £21.95
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On this page
  1. 1.A track bar is not an anti-lift
  2. 2.Measure the clear track, then take the yoke off
  3. 3.What these listings actually claim
  4. 4.Lock it, and be able to open it

A track bar is not an anti-lift

A pole in the bottom track only resists the slide. Lift the panel and the pole stays on the floor if the door was made to come out that way. Ask the Police and West Yorkshire Police both split a track bar from anti-lift blocks in the top track. The loose bar is the tube you drop in and lift out. A Charlie-style bar is a cut length fixed to the frame. Northwest Hardware’s patio bar is 1,200 mm, about £32.60 plus VAT, about £39.12 including tax. None of these poles is an anti-lift, and none is PAS 24 or Sold Secure. If the panel rocks upward, call a fitter.

Measure the clear track, then take the yoke off

Measure the closed panel along the bottom track, from the jamb to the edge the pole will meet. Handle height is the hinged-door figure, in the door security bar buying guide. On a patio the pole lies flat, so 90 cm of handle height will not tell you whether 113 cm of tube is enough. Take the yoke off and lay the tube in the track. West Yorkshire Police advise that the sliding section should be on the inside. If it runs on the outside, the pole meets the fixed leaf. AceMining’s locks sit near 53 cm, then near 70 cm, so a gap in between will not lock. The pin sequence is on the how to use a door security bar page.
Pindex Pindex sliding and hinged door security bar, 1.1–1.4 m

Testsieger

Pindex Pindex sliding and hinged door security bar, 1.1–1.4 m
9.2/10about £16.99
View offer

What these listings actually claim

Defender HA00721, about £21.95, spans 73–113 cm and names patio use. Reviews include tracks that were too short or slid the wrong way. Amazon Basics, about £19.94, lists 73.6–114 cm and a removable head, but the sliding maximum is not a clean figure. HOMGEN, about £21.37, is 84–113 cm and wobbly at full extension. eSynic at about £18.49 covers 84–113 cm and is still short for some patios. Pindex, about £16.99 and 110–140 cm, missed one of two doors in a review, and the box lists mounting hardware. LuLobtg, about £12.99 and about £14.99, is about 112–140 cm, and shared reviews use it to hold a patio open. The top pick and the best value are on the best door security bar page.

Lock it, and be able to open it

Lock the patio latch before the pole goes down. The National Protective Security Authority treats a timber bar in a patio track as temporary, and secondary bars must not stop you escaping. Practise lifting the pole out from inside. If this door is the only way out, a bar you cannot lift is the wrong product. London Fire Brigade says you must not alter a flat entrance fire door. A house patio is an escape route under that NPSA line, though it is not automatically that fire-door leaf. Keep screws off a fire door, and leave top-track positions to a fitter.

Common questions

Does a sliding door security bar stop someone lifting the panel out?
A pole in the bottom track blocks the slide after you have measured the clear opening, and it leaves the lift untouched. Ask the Police and West Yorkshire Police both treat a top-track anti-lift, often a block or a batten, as a separate fitting. If the panel already rises in your hands, ask a fitter. None of the poles in this amazon.co.uk set is that device.
Where does the pole sit, and do I take the yoke off?
Lay the tube in the bottom track with the yoke or cradle off, so the ends bear on the jamb and the moving panel. West Yorkshire Police advise that the sliding section should be on the inside. If the moving panel is outside, the pole meets the wrong leaf. Defender reviews note that small springs can leave the fork as you take it off, so do that over a tray.
What length should I measure on a patio door?
Measure the clear track with the panel closed, from the jamb to the edge the pole will meet. Compare that horizontal centimetre with the listing’s range, not with the height of the handle. On the AceMining bar the locks sit near 53 cm and then near 70 cm, so an opening in the gap will not lock.
Can I leave the bar in the track to hold the door open by day?
Use a door stop for the breeze. LuLobtg reviews, shared across the black and white listings, describe the bar holding a patio door open. A security bar in a partly open track is propping the gap you wanted shut, and it does nothing about lift. Take it out when you want air, and put it back only when the panel is closed and the latch is on.
Do I still lock the patio if this door is the only way out?
Lock the patio latch first. The pole is extra resistance after that lock, and you must be able to lift it out from inside. The National Protective Security Authority says a timber track bar is temporary and that secondary bars must not block escape. Practise that lift before you rely on it. London Fire Brigade says a flat entrance fire door must not be altered, so keep screws off that leaf.

Related pages

Alarm door stop

Door security bar

Best door security bar for a measured inswing door

Door security bar buying guide: swing, length, floor

How to use a door security bar on a UK inswing door

Door security bar vs door jammer: which one to pack

Sources

Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are the amazon.co.uk figures in the listing extracts. Defender’s amazon.co.uk page and the DoorJammer UK site still matched on 19 October 2026. A 250 kg or 400 lb line is a seller claim. PAS 24 is quoted only for the DoorJammer listing and the Secured by Design entry, not for the telescopic bars.

  1. Ask the Police Q1098: security door bar and patio anti-lift (retrieved 19 October 2026)
  2. GOV.UK Approved Document Q (retrieved 19 October 2026)
  3. BSI PAS 24:2022+A1:2024 (retrieved 19 October 2026)
  4. Secured by Design: DoorJammer entry (retrieved 19 October 2026)
  5. DoorJammer UK FAQ (retrieved 19 October 2026)
  6. NPSA patio doors technical supplement (retrieved 19 October 2026)
  7. London Fire Brigade: fire doors (retrieved 19 October 2026)
  8. Defender HA00721 on amazon.co.uk (retrieved 19 October 2026)