Poke-through floor device with heat-isolation feature

A poke-through device for installation in a hole in a floor structure, the floor structure defining a floor in a first working environment and a ceiling in a second working environment, the hole communicating between the first and second working environments, the poke-through device comprising:

• a receptacle-receiving basket, the basket including a lower structure having a coupling standoff mount, the standoff mount having a support structure including a contact surface generally at the top of the support structure and at least one gap in the support structure minimizing thermal transfer between at least one fastener assembly and the basket;
• an intumescent member disposed below the basket;
• a base member for supporting the intumescent member;
• and
• the at least one fastener assembly extending through the intumescent member and securing the intumescent member between the basket and the base member, wherein a first portion of the fastener assembly is in direct engagement with the contact surface and a second portion of the fastener assembly extends across the gap.