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3M 4277 Respirator

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The 3M 4277 half-mask protects against acid gases, vapours and particulates. The innovative single-piece design ensures this product is comfortable and very simple to use. Integration of the central valve reduces breathing resistance and ensures the mask-user does not get too hot.
SKU#:
2012
Availability: In stock
£31.55
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3M 4277 Respirator Half Mask ABE1 P3 The 3M 4277 respirator assures protection against acid gases, vapours and particulates, including ammonia and solvents. As with all the 4000 series masks, the innovative single-piece design comfortably integrates twin inhalation valves into the main body of the mask, removing the need for additional filters. As a result, this product is always ready and simple to use, avoiding operator assembly errors. In addition, the central parabolic valve reduces breathing resistance and ensures the mask-user does not overheat.
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Christmas-New Year Dispatch Dates:

  • 18th December midday cut off.

Any orders placed after this date will be processed.

  • 27th December midday cut off.
  • 30th December midday cut off.
  • Next dispatch date: 2nd January 2024.
    • Whilst standard delivery is stated as 1-3 days we are currently delivering over 99% of orders the next business day as a standard service if placed before 2.30 pm.

Delivery Options:

  • Standard Delivery: (1-3 business days) (£ 5.75 - £ 6.20)
  • Next Business Day Delivery: (Order Must be placed before 2 pm) (£ 9.50 ex vat)
  • Next Day Working Day Delivery Pre 12 delivery (Order Must be placed before 2 pm): £ 11.50 ex vat
  • Next Working Day Delivery Pre 10.30 delivery (Order Must be placed before 2 pm): £ 13.95 ex vat
  • Weekend Delivery Options:
  • Saturday Delivery: (Order Must be placed before 12 pm) £ 22.50 ex vat

FREE DELIVERY OVER £ 75 NET

  • The free delivery over £ 75 net is only available for UK mainland.
  • Deliveries to Islands and highlands are a 2-3 day delivery option only & charged at £ 16 ex vat.
FREE DELIVERY ORDERS OVER £70

Excludes Islands, Highlands & Channel Islands.

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Frequently Asked Questions

01: What are half Mask Respirators?

Half mask respirators enclose both the nose & mouth & as such are termed half masks. Half masks are made from natural or synthetic rubber that allows sufficient flexibility for facial contours. Every half mask is required to reach the EN 140:1998 safety standard & will protect against both very fine particulates & gases when used with the correctly selected mask filters for the hazard.

02: What Half Masks Protect against viruses?

Half mask respirators with the P3 filter (FFP3 Equivalent) provide an APF 20 which is the correct grade of protection against viruses such as Covid 19 & SARS.

03: How long can you wear a half mask?

Half masks have been designed to be worn for long periods however as per HSE guidance regular breaks should be taken after less than an hour of continuous use as the RPE may start to feel uncomfortable. This reduces the risk that the user will loosen the straps thus reducing the seal & protection.

04: Do you have to maintain Half Masks?

All half mask respirators used on a regular basis should be thoroughly checked at least once a month. If the half mask dust respirator is only used occasionally it should be examined carefully before use.

05: What are the key maintenance checks for Half Mask respirators?

  • Filter check – Filtration material is kept within the filter & due to limitation capacities can get clogged making breathing difficult. Any replaceable filters should be replaced if needed.
  • Half Mask Cleaning – Cleaning of the half mask is advised to remove any built up contaminants & moisture. Only cleaning materials advised by the manufacturer should be used.
  • Valves –Check & replace any faulty valves.
  • Straps should be checked for damage. A damaged strap may prevent a secure face fit to be achieved.

06: What protection levels do Half Mask Respirators provide?

Depending on the filter selected, Half face masks will provide an APF 4 (P1 Filter), APF 10 (P2 Filter) & an APF 20 (P3 Filter).

Half masks will also protect against gases/vapours including organic/inorganic fumes & acid gases as well as ammonia & mercury. The correct fume filter for the hazard encountered can be found in our mask filter category.

Half mask respirators should not be used in oxygen deficient environments.

07: How can I check if my Half Mask is properly sealed?

Always follow the manufacturers RPE advice when using the mask however generally a good seal can be checked by covering the inlet valve / filter with your hand, inhaling & holding your breath for circa 10 seconds. The mask suction should not loosen. If it does loosen readjust the head hardness straps & retry until a good seal has been achived.

08: What protection levels do Half Mask Respirators provide?

It is the company’s legal responsibility to ensure their RPE wearers have been face fitted. Protective Masks Direct ltd provide face fitting across the whole of the UK.