Optair Filter with prefilter

BAM Site DirectPRODUCT SKU: S.141730

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In stock|  Available|  Despatched 3-5 days

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  • The Optrel Swiss Air HEPA filter cartridge and pre-filter are designed for use with the Swiss Air (Powered Air Purifying Respirator) PAPR. These TH3P R SL particulate filters removes 99.8% of welding fume particulates, dust, smoke and aerosol. The pre-filter should always be fitted in front of the main filter, this ensures the larger particulates are removed first and drastically extends the life of the Swiss Air main filter.

    Revolutionary TH3 blower respiratory protection system : TH3 certified particle master filter for 99.8% clean breathing air

    Scope of delivery: No. 4088.400 particle filter swiss air including pre-filter / No. 4088.430 Set of 20

     99.8% cleaned :The master filter has the highest filter class TH3 and thus filters 99.8% of all pollutants from the air. That means no getting through for aerosols, smoke, particles or viruses. Powerful TH3 filter unit in an ultra-flat design.

    Technical specifications: 

    Filter type: TH3P R SL filter for TH3P system (EU) with pre-filter

We aim to despatch our customer orders as quickly as possible. For orders placed online and where the items are held in stock the goods will be usually despatched within the displayed expected delivery timescale.

If for any reason delivery is delayed we will notify you.

We deliver to Mainland UK addresses, the following delivery services are available:

Standard next day delivery             

For orders over £150 (excluding signage)  F.O.C.

For orders below £150        

For orders under  £150 (excluding signage) £9.00

Specialist delivery

Specialist delivery service (e.g. signage):  POA

Enhanced delivery options 

For priority timed deliveries, weekend or options outside of mainland UK, please contact us for a quotation.


Returns & Cancellation

Trade customers

Faulty, damaged or incorrectly supplied goods

In accordance with our Terms & Conditions of Sale, faulty or damaged goods may be returned if these have been inspected upon delivery or where not possible, signed for them as “not examined” and that we have been notified within 3 working days from receiving the goods.

Incorrectly delivered items must be returned in their original condition, in unopened packaging, as delivered, with proof of purchase.

Unwanted or incorrectly ordered goods

If an order has been placed incorrectly, and that we have been notified within 3 working days from receiving the goods, we may at our discretion agree a return of the goods, however these will be subject to a 20% restocking charge.

Where an item is bespoke or has been decorated returns will not be accepted.



If ordering goods as a consumer you have a statutory right to cancel the order for any reason and receive a full refund including any standard delivery charges. To exercise your right you must notify us by email/post/phone within 14 calendar days from order acceptance or from receiving the goods. If the order is delivered in installments, the time-frame ends 14 calendar days after you receive the final installment. This does not apply to bespoke or decorated goods.

Goods must be returned within 14 days from cancellation of order and you will be responsible for returning the goods at your own cost. Any refunds owed will be paid within 14 calendar days, using the same payment method used on the original order.


You may return faulty, damaged or incorrectly supplied goods within 30 days from receiving them. Goods should be returned in their original condition and we will issue a replacement or refund.

Any refunds owed will be paid within 14 calendar days, using the same payment method used on the original order, including delivery and returns costs.

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