Pyramid Interiors Distributors is a regional full service distributor of commercial and residential building materials. We inventory a full line of interior finishing products for ceilings, walls and floors. In addition, our Jackson, MS and Little Rock, Ar. location offers an EIFS (exterior finishing system) and stucco line.. Pyramid Interiors Distributors is a regional full service distributor of commercial and residential building materials. We inventory a full line of interior finishing products for ceilings,walls and floors.