MSA Advantage 420 (Bayonet Connection) Large
MSA Advantage 420 (Bayonet Connection) Large

Product Code - 10102275

exc VAT £37.60 inc VAT £45.12
Due to high demand delivery timescales may fluctuate. Please contact our Sales Team on 0141 771 7749 to check stock levels before purchasing.
Description / Features / Spec


MSA Advantage 420 (Bayonet Connection) Large

This particular version of the MSA Advantage 420 has a twin bayonet MSA connection and comes in a large size. 

Please Note: Filters are not included with this product.

The innovative MSA Advantage 420 half mask respirator stands out due to its excellent comfort and sophisticated design. Coming from the Advantage 400 series, it is simple to use and the unique harness assembly makes the device easy to don and take off.

It has both a drop-down and lock-down mode which allow the wearer to remove the mask without it affecting other safety equipment worn such as a helmet and means the user can fix the size of the harness to allow a proper fit.

To increase comfort the flat single loop harness prevents any pressure points on the wearer’s head when using head protection and the wide straps stop the harness twisting and cutting into the nape of the neck. The Advantage 420 has a chin cup with a built-in drain hole and a multi-ethnic face seal to prevent the half mask respirator from slipping and also allow it to adapt to a broad range of faces.

User safety is provided through the one-piece MultiFlex nose cup which is made of soft, smooth co-moulded silicone and rigid plastic. This makes the face piece durable and stable when worn, without compromising comfort. The low profile design of the MSA Advantage 420 makes it flexible and suitable for a wide range of applications.

Key Features

  • Patent-pending one-piece UniBond over-mold face piece.
  • AnthroCurve II face-seal adapts perfectly to multi-ethnic head sizes and facial contours.
  • Patent Pending yoke and harness design enables quick and easy switch between lock-down and drop down modes.
  • Low-profile design integrates extremely well with other personal protective equipment.
  • Comfort and adjustability with our form fitting neck buckles and wide straps that eliminate discomfort




Nose Cup

Liquid silicone rubber and nylon


Polyoxymethylene (POM)

Head Harness

Polyester (PES) and Lycra

Inhalation Valve


Exhalation Valve

Liquid silicone rubber

Neck Buckles

Polypropylene (PP)


Large: 157g

Approvals EN 140, NIOSH, GOST, AS/NZ
What's Included?

MSA Advantage 420 Half Face Mask - Twin Bayonet Connection - Size Large


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Take advantage of our web-exclusive free UK mainland* delivery offer on orders over £75 ex VAT.  See all costs for delivery below and visit our main delivery page for more information on timescales as some restrictions may apply.

Please note: we're currently facing high demand for all Facemasks and Filters, due to the Coronavirus outbreak.  Our stock levels are changing constantly and we're working hard to fulfill demand where we can. This means that express delivery may not always be available and standard lead times may vary, however our Sales Team will be in touch to advise latest delivery timescales. 

UK & Ireland Delivery Options

UK Mainland Standard Delivery on orders under £75 ex VAT - £5.95 ex VAT*
UK Mainland Express Delivery - £21.50 ex VAT (timescales vary – please see delivery page)
Highlands Delivery - £25.00 ex VAT
Channel Island Delivery - £40 ex VAT
Northern Ireland & Republic of Ireland - £25 ex VAT
Saturday Delivery Options – Please contact us on 0141 771 7749 for more info

Standard delivery timescales are normally 3-5 working days, depending on stock availability.  Express delivery is normally 1-3 working days, depending on stock availability.  Although we carry an extensive stock, there may be some items that are unavailable due to quantities or otherwise.  In this case we will inform you of the status of your order and whether or not it can be fulfilled within our standard delivery timeframe. *Mainland UK delivery excludes Northern Ireland, other charges apply.

Please visit our main delivery page for more terms and conditions or contact our Sales Team on 0141 771 7749  or [email protected] for more information.

International Delivery Options

Delivery costs vary between countries.  Please visit our main delivery page for more information.



Should you wish to cancel an order or return unwanted goods please follow the procedures detailed below to help us ensure cancellations/returns are processed as quickly and efficiently as possible.

Simply log on to your customer account, note the order reference number and email the full cancellation details to [email protected] or contact us on 0844 550 0001. Assuming the order has not been despatched we will cancel.

You have the right to cancel the purchase of goods without having to give a reason at any time within the “cooling off period” of fourteen working days, beginning the day after you take delivery of your order.

You must notify us of your cancellation in writing via email to [email protected] or to our contact address. (Details Here)

If you are in possession of the goods you are under the duty to retain them and take reasonable care of them.

You must send the goods back to us in their original condition to our contact address at your own cost (unless we delivered the item to you in error or the item is damaged or defective) as soon as possible once you have cancelled the contract.

Alternatively we will collect the goods from you which will incur a charge no greater than the actual cost of arranging the collection and shipping. In this case you must make the goods available for collection. We will contact you to make further arrangements.

We reserve the right to make a charge not exceeding our direct costs of recovering the goods if you do not return the goods or return them at our expense.

Upon receipt of returned items in satisfactory condition we will arrange a full credit by the same method used to pay for the goods originally. Any credit due will be processed within a maximum of thirty days.

Note: If you wish to return goods for refund or exchange after 14 days, a re-stocking fee of 20% of the full order total will apply.

If upon receipt of goods you find them to be faulty, damaged or if you have been incorrectly supplied an item, you should notify us within 24 hours by contacting 0844 500 0001 or [email protected] and quoting your order number and contact details.

Frontline Safety will arrange uplift of any damaged or wrongly received goods and if on inspection of goods we also find them to be damaged, faulty or incorrectly supplied, we will offer replacement goods or provide a full refund.

We recommend you inspect all goods prior to signing for and accepting delivery. If there is any visible damage to the outer packaging, ensure goods are sign for as damaged. In instances where it isn’t possible to sign for goods as damaged, these should be signed for as unexamined.

Note: If your goods happen to develop a fault out with the standard returns period but within supplied warranty period or if you require any additional assistance, please contact us on 0844 550 0001 or email [email protected]


All postage, handling, customs and duty charges for all returned goods are the responsibility of the customer. We recommend using a fully traceable, insured service as goods are your responsibility while in transit.

Related Blog Post

Facemasks for Coronavirus Outbreak: A Frontline Safety Guide

With the recent outbreak of Coronavirus and level of confusion around purchasing suitable Personal Protection Equipment (PPE) or  Face Masks. Information around what types of protection are recommended has become increasingly important.

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