what is the space between the steel slats?

About 5". If you are concerned because there is space between the slats and it isn't solid, I use this bunkie board with a cheap foam mattress and haven't had any issues (daily use).

Can this be use with bed frame that doesn't use a box spring

Yes, that is why I bought the frame. Got rid of the box spring

Same at me.... bought it when $99 , missed delivery, then price when up 119. Oder it again, will update and send a complaint if I won’t receive it again

Can this replace cheap wooden slats on a wooden queen platform bed that already has a steel center beam installed?

I am using this on a fairly inexpensive wooden queen bed frame that has a "lip" on each side board. The Bunkie board is flat & provides good support for a soft mattress (like memory foam). If the steel center beam you mentioned is not elevated above the rest of the mattress support area such that the Bunkie board "rocks," it should work fine.

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Zinus Quick Lock Bunkie Board, Box Spring and Bed Slat Replacement, Queen

Zinus Quick Lock Bunkie Board, Box Spring and Bed Slat Replacement, Queen

Product ID: 44204043

Details

Brand
Zinus
Color
Black
Material
Alloy Steel
Size
Queen
Style
Traditional

📏Slim 1.6-inch profile fits tight spaces

🛏️Supports up to 700 lbs mattress weight

🛠️Quick Lock assembly in minutes

Description

🛏️ Elevate your sleep game with steel-strong, no-fuss support!

ULTRA SLIM PROFILE - At just 1.6 inches thick, it maximizes mattress height without bulk.
SPACE SAVVY PACKAGING - Compact design ships flat for easy delivery and maneuvering through tight hallways.
ROCK SOLID STEEL SUPPORT - Premium alloy steel frame engineered to hold up to 700 lbs without sagging.
EFFORTLESS QUICK LOCK ASSEMBLY - Snap together your bed base in minutes—no tools, no hassle.
VERSATILE MATTRESS COMPATIBILITY - Perfectly supports spring, hybrid, and memory foam mattresses for lasting comfort.

The Zinus Quick Lock Bunkie Board is a durable, slim-profile mattress foundation crafted from premium alloy steel. Designed for quick, tool-free assembly, it supports up to 700 pounds and is compatible with spring, hybrid, and memory foam mattresses. Its compact packaging and low height make it ideal for tight spaces and modern platform beds, ensuring long-lasting mattress support and quiet stability.

Specifications

ASIN	B072HTRVM1
Additional Features	Sturdy
Best Sellers Rank	#283,786 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,260 in Bed Frames
Brand	Zinus
Brand Name	Zinus
Color	Black
Customer Reviews	4.5 out of 5 stars 14,602 Reviews
Global Trade Identification Number	00841550204582
Included Components	Bunkie Board
Item Depth	79
Item Dimensions	79 x 59.5 x 1.6 inches
Item Dimensions L x W x Thickness	78.7"L x 59.5"W x 1.6"Th
Item Highlight	Metal Frame with Steel Slats, Durable Construction Easy Assembly
Item Type Name	Bunkie Board
Item Weight	31 pounds
Manufacturer	Zinus
Manufacturer Part Number	OLB-QLBKB-Q
Material	Alloy Steel
Material Type	Alloy Steel
Maximum Weight Recommendation	700 pounds
Model Number	OLB-QLBKB-Q
Number of Items	1
Number of Packs	1
Number of Pieces	1
Product Care Instructions	Wipe with Dry Cloth
Product Dimensions	78.7"L x 59.5"W x 1.6"Th
Shape	Rectangular
Size	Queen
Style	Traditional
Style Name	Traditional
UPC	841550204582

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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