Carrier with vertical grid for supporting substrates in coater

An apparatus comprising:

• a carrier for holding multiple substrates having a front surface disposed in a substantially vertical orientation, the carrier comprising:
• (a) a lower vertical grid mount and an upper vertical grid mount;
• (b) a plurality of vertical support bars, each engaged with both the upper vertical grid mount and the lower vertical grid mount, and comprising:
• a body region extending along a length of the vertical support bar and including a plurality of slots, and a vertical support flange region extending outwards from the body region;
• and
• (c) a plurality of fasteners, each fastener being configured to engage with a respective one of the plurality of slots;
• wherein:
• (i) the carrier further comprises a plurality of retainers, each comprising a retainer flange, and each fastener is configured to engage with a respective one of the plurality of slots and of the plurality of retainers, the fastener extending, orthogonally to the front surface, through the respective slot, or
• (ii) each fastener is configured to engage with a respective one of the plurality of slots, the fastener extending, in a horizontal direction parallel to the front surface, through the respective slot, the slots being configured to accommodate the fasteners such that the fasteners secure the substrates against the body region between the vertical support flange region and the fastener.