PFT made MOD-U-LINE MCLS modular aluminum enclosures (sides, top and front/back).
The only information on the web is https://www.ceitron.com/passive/pft.html Does anyone still have a copy of their brochure? They were used a lot for projects in the 70's and 80's like the PCM-12 The company was bought by Zero Mfg in the 90's. There isn't anyone making anything like that now. http://www.dvq.com/oldcomp/PCM12/pcm12-1.jpg
