Standard float glass contains 0.10–0.15% iron oxide, giving it a faint green tint when viewed edge-on. Ultra-clear glass reduces iron content to 0.02% or less, resulting in:

• • True color neutrality – No green tint affects artwork colors
• • Higher light transmission – 91.8% vs 89.2% for standard float
• • Superior clarity – Critical for high-end framing

For museum-quality framing, ultra-clear is the only professional choice. For standard applications, standard float glass works but may show slight color cast with certain artworks.

For 29x40 picture frames, we recommend:

• • 2mm thickness – Standard for most picture frames (≤11" diagonal)
• • 3mm thickness – For larger frames (>11" diagonal) or where extra rigidity is needed
• • 4mm+ thickness – Only for very large frames (>20" diagonal) or specialty applications

Thinner glass (<1.5mm) risks breakage, while thicker glass (>3mm) adds unnecessary weight and cost for standard picture frame applications.

Yes! We offer multiple edge finishing options for your 29x40 picture frame glass:

• • Ground edges (Standard) – Ra ≤1.6μm, suitable for most applications
• • Precision ground edges – Ra ≤0.8μm, for professional framers
• • Polished edges – Ra ≤0.4μm, museum-quality finish
• • Beveled edges – 45° chamfer for decorative frames
• • Pencil polished edges – Smooth finish for handling comfort

Edge quality directly affects safety during handling and aesthetics in finished frames. Specify your requirements when ordering.

Our flexible MOQ policy for 29x40 picture frame glass:

• • Standard clear float glass: 500 pieces (mixed sizes available)
• • Ultra-clear low-iron glass: 300 pieces
• • Tempered glass: 200 pieces
• • Custom coatings/finishes: 1,000 pieces

For smaller orders, we offer sample packs (50 pieces) at 50% premium to test quality before bulk purchase. No MOQ for samples!

Our breakage prevention packaging includes:

• • Individual cell packaging – Each piece wrapped in 3 layers of protective film
• • Cardboard dividers – Separates each layer in cartons
• • Corner protectors – Reinforced edges for safe handling
• • Stacking limits – Maximum 10 layers per carton
• • Fragile stickers – Clear hazard markings on all packages

We achieve <1% breakage rate in transit – compared to 5–15% industry average. For extra protection, we offer wooden crates at additional cost.

Absolutely! As a 28-year OEM supplier, we specialize in custom solutions for picture frame manufacturers:

• • Custom sizes – Any dimensions within our processing capabilities
• • Branded packaging – Your logo on boxes and inserts
• • Special coatings – Anti-reflective, UV-blocking, or privacy films
• • Unique edge finishes – Decorative or functional treatments
• • Mixed SKUs – Combine different glass types in single orders

We handle everything from design to delivery, including certification documentation for your target markets. No order too small for customization!

Our international payment terms for picture frame glass:

• • 30% deposit via TT (Telegraphic Transfer) or LC (Letter of Credit)
• • 70% balance before shipment
• • Alternative options – PayPal (5% fee), Western Union, or credit cards (3% fee)
• • Flexible terms – For established customers with credit limits

For new customers, we offer L/C at sight for orders over $5,000. All payments processed through secure channels with 100% order tracking.

We welcome factory verification through multiple channels:

• • Virtual tours – Live video walkthroughs via Zoom/WhatsApp
• • Third-party inspections – SGS, Bureau Veritas, or Intertek reports
• • Sample orders – Test our quality before bulk purchase
• • Customer references – We'll connect you with existing clients
• • Factory photos/videos – Regular updates on production

We've been exporting glass products for 20+ years with no quality complaints. Your confidence in our capabilities is our top priority.