What Are ISI:710 and ISI:303 in Plywood?
Let’s break it down for the average homeowner or furniture buyer:
- ISI:710 = Boiling Waterproof (BWP) plywood
- ISI:303 = Moisture Resistant (MR) plywood
These numbers come from Indian Standard codes created by BIS (Bureau of Indian Standards) to ensure quality and durability of plywood.
Each code represents how well the plywood can handle water, heat, pressure, and usage in different conditions.
Side-by-Side Comparison: ISI:710 vs. ISI:303
| Feature | ISI:710 (BWP) | ISI:303 (MR) |
|---|---|---|
| Full Form | Boiling Water Proof | Moisture Resistant |
| Water Resistance | ✅ 100% Waterproof | 🚫 Only splash/moisture-resistant |
| Glue Used | Phenol Formaldehyde (PF) | Urea Formaldehyde (UF) |
| Boiling Water Test | Survives 72 hours | Fails under 8 hours |
| Ideal Use | Bathroom, kitchen, exteriors | Living room, bedroom, partitions |
| Durability | 15–25 years | 5–10 years |
| Cost | Higher | Lower |
| Termite/Fungus Protection | Strong | Basic |
| Used in Modular Kitchens? | ✅ Yes | 🚫 Not recommended |
| Certified As | IS:710 Grade | IS:303 Grade |
Which One Should You Choose?
✅ Choose ISI:710 If:
- You’re building modular kitchens, bathroom cabinets, or balcony units
- Your area has high humidity, monsoon seasons, or coastal climate
- You want long-term peace of mind
- You're investing in high-rise or premium interiors
- You care about fire safety and structural durability
- You’re using Plyneer Club or similar fire-retardant, waterproof options
Best for:
- ☑️ Kitchens
- ☑️ Bathrooms
- ☑️ Utility Areas
- ☑️ Commercial Interiors
- ☑️ Coastal Homes
Choose ISI:303 If:
- You’re making cupboards, beds, TV units, or dry-area furniture
- You want a cost-effective plywood option
- The furniture will not come in contact with water or humidity
- You’re looking at temporary furniture or budget interiors
Best for:
- ☑️ Bedrooms
- ☑️ Living Rooms
- ☑️ Office Cabins
- ☑️ Bookshelves
- ☑️ Wall Panels
Price Comparison
| Plywood Type | Average Market Price (8x4, 18mm) |
|---|---|
| ISI:710 (Marine) | ₹95–₹135 per sq. ft |
| ISI:303 (Commercial) | ₹55–₹80 per sq. ft |
Real Example: Plyneer Club (ISI:710) vs. Commercial MR Ply
| Scenario | Result |
|---|---|
| Steam from kitchen cooking | MR ply swells and delaminates in months |
| Bathroom humidity | MR ply attracts fungus and smells |
| Monsoon season in coastal city | MR ply warps and fails |
| Plyneer Club (ISI:710) | Remains intact, fire-resistant, waterproof with lifetime warranty |
Don’t Get Fooled by “Marine Ply” Labels
Many local shops label ordinary plywood as “marine ply” — but only ISI:710 certification guarantees boiling waterproof performance.
✅ Always check for:
- ISI stamp with “IS:710”
- GST invoice
- Dealer credibility
- Brand warranty (like Plyneer Club’s lifetime warranty)
Final Verdict: Which One Is Best?
| Need | Best Choice |
|---|---|
| Wet areas (kitchen/bathroom) | ✅ ISI:710 |
| Long-term, high-end interiors | ✅ ISI:710 |
| Short-term or budget furniture | ✅ ISI:303 |
| General home furniture | ✅ ISI:303 (if kept dry) |
| Safe, all-in-one solution | ✅ ISI:710 (like Plyneer Club) |
Conclusion: One Grade Can Change Everything
The difference between ISI:303 and ISI:710 plywood is like the difference between a raincoat and a plastic bag — both may block water for a while, but only one can truly protect you when the storm hits.
If you want long-term peace of mind, waterproofing, termite resistance, and zero warping — go for ISI:710. And if you want the best version of that?
👉 Choose Plyneer Club — India’s most trusted ISI:710 plywood, fire-retardant and lifetime guaranteed.
