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Rectangular translucent diffusion gel sheet, 24 by 21 inches, matte flame-retardant finish

Lee Filters

Lee Filters 1/4 Tough Spun FR 24x21" Gel Filter Sheet

SKU CH-KR9J-50CJC

Flame-retardant diffusion sheet softens harsh studio light across a 24 by 21 inch area for safer, more natural results

  • Softer, more natural light from 1/4 Tough Spun diffusion
  • Flame-retardant material for safer studio use
  • Tough spun construction resists tears during repeated use
  • Large 24x21 inch sheet covers a wide range of light sources
  • Designed for professional photography and video lighting setups

Diffusion sheet for studio lighting

The Lee Filters 1/4 Tough Spun FR sheet softens harsh light sources to reduce contrast and create a natural look for photography or video work. Its flame-retardant construction meets safety requirements for professional studio environments. The 24x21 inch dimensions provide broad coverage for a variety of lighting fixtures.

Handling and mounting

The tough spun material resists tears and stands up to repeated handling on set. It can be cut to size or clipped to barn doors and frames without special tools. The sheet has no adhesive backing, so it must be secured with tape, clamps or a dedicated filter frame to stay in place.

Light loss and heat limits

As a quarter-strength diffuser, it transmits most of the source output while subtly spreading the beam. The flame-retardant rating protects against ignition, but the gel will still degrade if placed too close to high-temperature tungsten or HMI heads. Users needing stronger diffusion or colour correction should select a different density or filter type.

Highlights

  • Softer, more natural light from 1/4 Tough Spun diffusion
  • Flame-retardant material for safer studio use
  • Tough spun construction resists tears during repeated use
  • Large 24x21 inch sheet covers a wide range of light sources
  • Designed for professional photography and video lighting setups

Specifications

No published specifications for this item yet.

Questions about this item

How can I tell the 1/4 Tough Spun FR sheet is softening my lights as intended after clipping it in place?

You will see a visible reduction in harsh shadows and a smoother gradient across your subject, confirming the 1/4 stop diffusion is working.

What comes in the box and do I need to buy clips or frames separately to mount the 24x21" sheet?

The box contains the single 24x21 inch gel filter sheet only; mounting clips, frames or tape must be sourced separately.

Which version of the Lee Filters Tough Spun range should I choose for a subtle softening effect on a 24x21" frame?

Select the 1/4 strength Tough Spun FR sheet; it delivers a gentle diffusion while the flame-retardant coating adds safety for hot studio heads.

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