Armstrong Box - Maker and Slide Replacement?

[BikerDad]

I have a line on a used Armstrong 56" (?) roller box. There's not a lot of info on them, so I'm wondering if anybody knows who made them for Armstrong (it is US made IIRC), and whether the slides can be upgraded to something stouter. Methinks it has <100lb slides.

 

[mikebaker1129]

Maybe a Matco since Danaher owned both companies until the last year or 2.

 

[WittHay]

Seems there is a 54" 13 drawer Industrial series, made in USA. Thats the Matco box. Then there is a 52" 11 drawer Professional Series. made in ? Both have 75 lb. drawer slides.