Shipping & returns.

Short version: it ships fast, and joints you do not use come back for a refund.

Shipping

Free on orders over $75. Below that, a flat $6.

Everything in stock ships within 2 business days from Elk Grove, California.

Connectors are small and dense — a whole greenhouse of joints fits in one shoebox-sized carton.

Pipe is not shipped, not sold — buy Ø 28 mm from any local supplier using your cut list.

Returns

60 days, no questions. Over-ordered corners come back for a full refund, even out of the bag.

Joints are reusable by design — bolted once is not used up. If it clamps and torques, we will take it back.

Write to hello@kumigrid.com with your order number; we send a label the same day.

If a joint breaks

A joint used within its load rating that cracks gets replaced free, for as long as you own it.

Send a photo. We also genuinely want to see it — every broken joint teaches the load rig something.