We deliver and assemble your furniture within a 100-mile radius of our San Fernando store. Most orders are completed within 5–7 business days. You’ll receive a text or call from our team to confirm your order and schedule delivery.

• Family-owned since 1981
• ⭐ 4.9★ Google Rating
• Authorized dealer of the brands we carry
• White glove delivery & professional setup
• Local customer service before and after your purchase
• Financing options available
• Serving the San Fernando Valley for over 40 years

The Serta® Perfect Day Mattress® 12” Firm delivers comfort and convenience. Our mattress in a box fully expands quickly so you can sleep on it right away. This quilted innerspring mattress features our Supportive coil system for durability and all-night support. Pillowsoft® Aire Foam offers airflow and enhanced cushioning for exceptional comfort. Plus, Serta® Pillowsoft® Foam provides gentle contouring support while QuiltLoft™ Memory Foam offers additional comfort at the surface of the mattress. Looking for lower back care? A gel foam band provides our signature zoned comfort supporting the lumbar and hips. Our antimicrobial technology keeps your mattress fresh and clean from odor-causing bacteria. Whether you’re looking for a guest room, a kid’s mattress, or for yourself, the Serta Perfect Day Mattress has what you need, all within your budget.
Perfect Day - 12" Serta Firm Mattress in a Box - Twin
38.0"W x 74.5"D x 12.0"H - 95.31 lb
Perfect Day - 12" Serta Firm Mattress in a Box - Twin Long
39.0"W x 79.5"D x 12.0"H - 95.86 lb
Perfect Day - 12" Serta Firm Mattress in a Box - Full
54.0"W x 74.5"D x 12.0"H - 104.9 lb
Perfect Day - 12" Serta Firm Mattress in a Box - Queen
60.0"W x 79.5"D x 12.0"H - 108.69 lb
Perfect Day - 12" Serta Firm Mattress in a Box - King
76.0"W x 79.5"D x 12.0"H - 119.17 lb
Perfect Day - 12" Serta Firm Mattress in a Box - California King
72.0"W x 83.5"D x 12.0"H - 122.71 lb

Need help choosing the right product?

Found a better price? We'll try to match it

Text 818-365-6815 with the link to the item your interesed in. And our team will reach out.

With a 4.9★ rating on Google and over 40 years in business, Alfonsos Furniture & Mattress is a trusted, family-owned retailer you can count on. Shop confidently knowing you’re buying from a real local business with decades of experience and thousands of happy customers.