Video Chat with a Photography Expert - Live

LEE Filters Side Guides for 4mm Thick Filters

LEE Filters Side Guides for 4mm Thick Filters
No Longer Available
Ask Our Experts

LEE Filters G4 Overview

The Lee 4" filter holder (Foundation Kit) comes complete and accepts 2mm thick filters. You might want to modify it to take additional (or different thickness) filters. Lee offers special guides to accomodate your needs.

These 4mm side guides are intended for use with 4mm thick glass 4" filters.

LEE Filters G4 Specs

Packaging Info
Package Weight
0.01 lb
Box Dimensions (LxWxH)
3 x 3 x 0.1"

LEE Filters G4 Reviews

See any errors on this page? Let us know


Hello I have the sw150 this work
Asked by: manuel d.
No, it will not work with the LEE Filters SW150 Filter System Holder. The LEE Filters Side Guides for 4mm Thick Filters is only designed for usage with the LEE Filters Foundation Kit (Standard 4x4 , 4x6 Filter Holder).
Answered by: Manzell L.
Date published: 2018-08-28


Hi,I have a SW150 and planning to buy this to fit the 150mm CPL ( need the exact screws to go with this. Also is there anything recommended to ave a secure fit.Please recommend.
Asked by: Anonymous
The holder is not meant to be used with that size guides and they do not recommend a screw that will work with that.
Answered by: Robert K.
Date published: 2018-08-28

I ordered these 4mm rails to use with 4mm-thick ...

I ordered these 4mm rails to use with 4mm-thick glass filters, but the rails I received are identical in size and thickness to the standard 2mm rails already on my Lee holder. Am I missing something on how these are supposed to be installed to accommodate 4mm-thick filters, or did I just mistakenly get sent the wrong rails? The bag they came in is listed with part number FHB4(2), which appears from an internet search to be the correct part number for the 4mm rails.
Asked by: Scott
Thanks for the responses, everyone. I managed to get a correct copy of these 4mm side guides and can confirm that they're thicker. The total thickness front to back (including the flange) is 5.8mm, while the thickness of part that sits adjacent to the filter (excluding the flange) is 4.5mm. The side guides I received previously, which prompted this question, were simply an error.
Answered by: Scott
Date published: 2022-10-28


Id like to know if I need any accesory, screws or whatever, to fit it in my LEE foundation system
Asked by: Anonymous
You would need screws for these guides depending on how many filters you intend on using at once. Here is a link to the screws that are available for these guides:
Answered by: Kirk R.
Date published: 2018-08-28

Hi, Can I stack these to have 2 x 4mm rails on a ...

Hi, Can I stack these to have 2 x 4mm rails on a Lee 100 system?
Asked by: Angelo
Yes you can stack two 4mm guides together. Note you might need longer LEE Filters Side Guide Screws and depending on the lens you might get some vignette.
Answered by: Robert
Date published: 2020-02-02


Does it come in pairs?
Asked by: Jorge G.
Yes, it does comes in pairs, but without screws.
Answered by: Andres M.
Date published: 2018-08-28
  • y_2023, m_11, d_18, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.37
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_6
  • loc_en_US, sid_87161, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo