18mm x 18mm Square Tube Insert (For 12-15mm Tube) 1.5-3mm Wall | Black LDPE

Product code: SQ015
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18mm x 18mm Square Tube Insert (For 12-15mm Tube) 1.5-3mm Wall | Black LDPE
18mm x 18mm Square Tube Insert (For 12-15mm Tube) 1.5-3mm Wall | Black LDPE
18mm x 18mm Square Tube Insert (For 12-15mm Tube) 1.5-3mm Wall | Black LDPE
18mm x 18mm Square Tube Insert (For 12-15mm Tube) 1.5-3mm Wall | Black LDPE
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 499 £0.49 £0.59
500 - 999 £0.39 £0.47
1000 - 1999 £0.33 £0.40
2000 - 3499 £0.25 £0.30
3500 - 4999 £0.19 £0.23
5000 + £0.12 £0.14
£0.59 / each
Quantity:


Product Specification
Outside Diameter 18mm x 18mm
Wall Thickness 1.5 - 3.0mm
To Fit Tube Size 12.0-15.0mm
Colour Black
Head Height 5mm
Insert Length 11.5mm
Material LDPE

Next Day or Standard Delivery available via DHL or Royal Mail.
Order by 4pm (UK) for same day dispatch, Monday to Thursday or 2pm Friday.

Larger Order?

Call our sales team on

01233 713581


Frequently Bought Together

Total Price: £0.00

18mm x 18mm Square Tube Insert - 1.5 to 3.0mm Wall - Black LDPE

The SQ015 is a 18mm x 18mm black LDPE square tube insert with a 5mm head height and 11.5mm insert length. The 18mm size sits in the mid-range of small square sections and is commonly found in heavier furniture legs, commercial table bases and mid-weight shelving uprights where 15mm or 16mm is slightly too light for the application. The wall thickness range of 1.5 to 3.0mm is notably wider than most smaller sizes - this reflects the tendency toward heavier gauge tube at 18mm. The ribbed push-fit insert grips firmly across this full range. Black LDPE, no tools required for installation.

Common Applications

  • Heavier-duty furniture leg and commercial table base tube ends
  • Mid-weight shelving upright and racking tube end protection
  • 18mm square hollow section box section end finishing
  • Moisture and debris exclusion on 18mm SHS tube stock

18mm x 18mm Square Tube Insert Dimensions

  • Outside Diameter: 18mm x 18mm
  • Wall Thickness: 1.5 - 3.0mm
  • To Fit Tube Size: 12.0-15.0mm
  • Head Height: 5mm
  • Insert Length: 11.5mm
  • Material: LDPE (Low-Density Polyethylene)
  • Colour: Black
  • Fitting: Push Fit
  • Design: Ribbed walls for secure grip across multiple wall thicknesses

View our full square tube insert range or browse our complete tube insert collection.

Need help or buying in bulk?

For technical advice or volume pricing, call our team on 01233 713581.

Please call for any enquiries!
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Fri 8.30 am - 3.30 pm
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