🌬️ 4521 GeneralAire 16 x 25 x 3 MERV 8 Media Replacement for MAC1200
✅ Product Description
The 4521 GeneralAire 16 x 25 x 3 MERV 8 Media Replacement is a high-performance MERV 8 rated Opti-Fiber filter designed to improve indoor air quality by capturing dust, pollen, mold spores, and other airborne particles. Its durable pleated media ensures reliable performance for residential HVAC systems.
Compatible with GeneralAire MAC1200, Trion Air Bear Cub (255649-101), Trion Mini Club, and Ultravation 90-005, this filter provides efficient airflow while reducing system strain.
For best results, replace every 6 months with heating & cooling systems or 12 months with heating-only systems. In homes with pets, dust, or allergies, more frequent changes are recommended.
✅ Key Features
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✅ MERV 8 Filtration – Captures dust, pollen, and mold spores for cleaner air.
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✅ Durable Opti-Fiber Media – Built to last while maintaining airflow efficiency.
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✅ Compatible with Multiple Systems – Works with GeneralAire, Trion, and Ultravation models.
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✅ Standard Size 16×25×3 – Easy replacement for most HVAC filter cabinets.
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✅ Improves Indoor Air Quality – Reduces allergens and debris for a healthier home.
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✅ Protects HVAC Equipment – Helps prevent buildup on coils and in ducts.
📊 Specifications
| Specification | Detail |
|---|
| Model Number |
4521 |
| Filter Type |
Cartridge Media |
| Filtration Rating |
MERV 8 |
| Nominal Size |
16" × 25" × 3" |
| Actual Size |
15-5/8" × 24-3/16" × 2-15/16" |
| Media Type |
Pleated Opti-Fiber Media |
| Replacement Frequency |
6 months (heating & cooling) / 12 months (heating only) |
⚠️ Common Symptoms (When You Need a New Filter)
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Reduced airflow from vents.
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Increased dust buildup around the home.
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Allergy or asthma flare-ups.
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Higher energy bills due to system strain.
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Visible dirt or discoloration on the filter.
❓ Frequently Asked Questions (FAQ)
Q: What is MERV 8 filtration?
A: MERV 8 filters remove mid-sized particles like dust, pollen, and mold spores — perfect for residential HVAC systems.
Q: How often should I replace this filter?
A: Replace every 6 months with heating & cooling or every 12 months with heating only. More frequent replacement may be needed for dusty environments or homes with pets.
Q: Will this fit my HVAC system?
A: This filter fits GeneralAire MAC1200, Trion Air Bear Cub (255649-101), Trion Mini Club, and Ultravation 90-005 systems. Check your cabinet size: actual dimensions are 15-5/8" × 24-3/16" × 2-15/16".
Q: Can this filter be used with an air purifier?
A: No, it is designed for compatible HVAC systems only.
🛒 Shopping Tips
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🔍 Measure Before You Buy – Confirm your filter cabinet matches actual filter size: 15-5/8" × 24-3/16" × 2-15/16".
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🧰 Keep Extras on Hand – Buy multiple filters to save time and avoid missing replacement dates.
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🐾 Consider Pets & Allergies – Homes with pets or high dust may need replacement every 3–4 months.
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🌡️ Select the Right MERV – MERV 8 balances filtration and airflow efficiency.
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💡 Set Replacement Reminders – Use a calendar or phone alert to replace filters on schedule.
