Sundstrom SR 221 Pre filter
The Sundstrom SR 221 pre-filter elongates the lifespan of the main filters whilst also offering additional protection to the mask user and should always be used for particle gas and combined filters.
The Sundstrom SR 221 pre-filter is used to elongate the length of time the main filter can be used for and should always be used for particle gas and combined filters. They work by capturing larger particles prior to reaching the main filter, thus adding an additional layer of protection for the user.
- Whilst standard delivery is stated 1-3 business days we are currently delivering over 99% of orders next day as a standard service if placed before 2.30pm.
Delivery Options Available:
- Standard Delivery to 1 - 3 Days £ 6.
- Free Delivery over £ 150.