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Deal.ai › MMI Door › External Door
MMI Door
MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in

MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in

Best price now

$1,877.00at Lowe'sVerified

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Our take on the MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in

This is a primed white fiberglass exterior door, prehung in a 4-9/16 in jamb, in a 48 in by 80 in single-door size. Fiberglass resists dents, rot and moisture better than wood, and the primed surface is ready for paint. It ships with an ASSA 2002 Connect lock case, so the hardware is commercial-grade rather than builder-basic. At $1,877.00 at Lowe's as of November 8, 2026, it is the only new price listed, so there is no recent range to compare it against.

Best forWide exterior openings that need a 48 in slabCoastal or humid climates where wood doors swellHomeowners who want a primed, paint-ready doorEntryways that need a commercial-style lock case
Pros
  • Fiberglass skin resists dents, rot and moisture
  • Primed white finish is ready to paint
  • Prehung in a 4-9/16 in jamb for standard 2x4 walls
  • ASSA 2002 Connect lock case is a sturdy commercial-grade part
  • 48 in width suits wide or double-door openings
Cons
  • At $1,877.00 it costs far more than a standard 36 in fiberglass door
  • Heavy 48 in slab needs two people or a pro to hang
  • Primed only, so it still needs painting
  • No price history or competing stores to check the deal against
  • Lock case is supplied, but handles and cylinders may not be

MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in prices at every store

  • Lowe'sNew

    In stock

    $1,877.00Free shippingVerified
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Store links may earn us a commission. Price via Klarna.

MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in price history

Lowest price we've seen: $1,877.00 on Nov 8 at Lowe's. Tracked across 1 store since Nov 8.

Specifications

Lock Case
ASSA 2002 ConnectSource
Color
WhiteSource
NCS-Color
S 5020-G30YSource

Questions and answers

Is $1,877 a good price for this door?
It is the only new price listed, at Lowe's as of November 8, 2026, so there is nothing to compare it with. A 48 in fiberglass prehung door with a commercial lock case typically runs well above a standard 36 in door, so the figure is not out of line for the size.
What does 4-9/16 in mean?
It is the jamb depth, sized for a standard 2x4 wall with drywall on both sides. Check your wall thickness before ordering; thicker walls need a deeper jamb.
Does it come with a lock and handle?
The listing specifies an ASSA 2002 Connect lock case, which is the internal mechanism. Confirm with the seller whether the handle, cylinder and keys are included before you buy.
Can I paint it?
Yes. The door is primed white, so it needs a topcoat. Sand lightly, then apply an exterior-grade paint suited to fiberglass.
Is fiberglass better than a steel or wood exterior door?
Fiberglass will not rust like steel or swell and rot like wood, and it takes paint well. It costs more than steel and is heavier than either.
What size opening does a 48 in door need?
A 48 in by 80 in slab needs a rough opening roughly 2 in wider and 2-1/2 in taller, so about 50 in by 82-1/2 in. Measure before ordering.
Where is the MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in cheapest?
At Lowe's, for $1,877.00, as of our latest check.

Stores we've priced the MMI Door Fiberglass Primed Prehung 48 in 80 x 4-9/16 in at

  • Lowe's deals and prices

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