Can this be cut down to to length...31 3/4?

Yes. You just need to make sure that you take 5 1/4 inches off in 2 5/8" sections off of both ends. If that puts you too close to the predrilled and counter sun holes you may have to take the 5 1/4 inch section at one end and drill and countersink another hole.

are they concrete screws?

Definitely not concrete screws.

Yes, it’s aluminum. I used a hacksaw to trim

I have an old house and I’m considering this for an exterior door. Does it seal tightly, or do i need to put a vinyl strip on the bottom of the door?

This product provides an excellent base to seal with. In other words it provides no seal. Additional seal strip on the door is required.

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MD Building Aluminum Flat-Profile Commercial Threshold, Silver, 36in

Product ID: 20512134

Details

Brand
M-D Building
Color
Silver
Material
Aluminum
Product Dimensions
36"L x 5"W
UPC
043374683875

♿ADA-compliant wheelchair access

🌡️Energy-saving draft seal

🛡️UL-fire rated durability

Description

🛠️ Elevate Your Entryway: Durable, Draft-Proof, and ADA-Ready Threshold Powerhouse

SEAMLESS ACCESSIBILITY - Low-profile, non-skid design meets ADA standards for effortless wheelchair access without sacrificing style.
ENERGY EFFICIENCY YOU CAN FEEL - Effectively blocks drafts and moisture, stabilizing indoor temperatures and cutting energy costs.
BUILT TO LAST RATED TO PROTECT - Heavy-duty aluminum with UL-fire rating ensures unmatched durability and fire safety for commercial spaces.
PRECISION FIT FOR COMMERCIAL EXCELLENCE - Tailored for high-traffic environments, providing a secure seal that defends against dust, moisture, and wear.
SLEEK SILVER FINISH PROFESSIONAL APPEAL - Modern flat-profile design enhances any entryway with a clean, polished look that signals quality.

The M-D Building Products 68387 Aluminum Commercial Flat-Profile Threshold is a premium, UL-fire rated aluminum threshold designed for high-traffic commercial use. Measuring 36 inches long and 5 inches wide, it features a low-profile, non-skid surface that meets ADA standards for wheelchair accessibility. This threshold effectively seals out drafts, moisture, and dust, enhancing energy efficiency and indoor comfort while providing a sleek, durable barrier ideal for fire-rated doors and demanding environments.

Specifications

ASIN	B000FKDECQ
Best Sellers Rank	#21,731 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Thresholds
Brand Name	M-D Building Products
Color	Silver
Customer Reviews	4.6 4.6 out of 5 stars (2,947)
Global Trade Identification Number	00043374683875
Included Components	MD Building - 68387
Item Dimensions L x W	36"L x 5"W
Item Type Name	MD Building - 68387
Item Weight	5.92 ounces
Manufacturer	M-D Building Products
Manufacturer Part Number	68387
Manufacturer Warranty Description	No
Material Type	Aluminum
Model Number	MD Building - 68387
Number of Items	1
UPC	043374683875
Unit Count	3 Feet

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