Multi-Thickness Oval Opening Clip — One Clip Model from 3mm Thin Panel to 15mm Commercial Porcelain The YF-TLC-OO covers the full commercial tile thickness spectrum — from 3mm thin porcelain panels to 15mm standard commercial porcelain — with a single clip body. The 18mm opening height accommodates this range without requiring contractors to switch clip models when project specifications mix tile thicknesses. Thin porcelain panels (3-6mm) require gentle clamping — excessive