Even for a permanent darkroom, I'd recommend these. I have about a 6x12 foot darkroom and one red and one amber. I use them both for Ilford and other papers that call for an OC light and just the red for Eastern European papers. I do a lot of lith meaning that there is a lot of exposure of the paper to the safelights. I've never seen fogging and I have plenty of light. Highly recommended!
Originally Posted by Tim Gray